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Tim's Teachers
Tim's Teachers Vocabulary Mastery
Chapter 1 — Answer Key Teacher copy. Print seed 733276692 — this chapter reprints identically for as long as the seed is unchanged.

Section 1 Learn the Words

WordPart of speechDefinitionChineseExample
alter verb to change something 改变;修改 The editor asked Maya to alter the final paragraph so the conclusion matched the evidence.
ambiguous adjective unclear because it can have more than one possible meaning 模棱两可的;含糊不清的 The directions were ambiguous, so two groups understood them differently.
analyze verb to examine something carefully by looking at its parts 分析 Scientists analyze the samples before drawing a conclusion.
approach noun/verb a way of dealing with something; or to come closer 方法;途径;接近 The team tried a new approach after the first plan failed.
approximate adjective/verb close to the exact amount; or to estimate roughly 近似的;大约的;估算 The map gives the approximate distance between the two towns.
arbitrary adjective based on a choice or decision without a clear reason or rule 任意的;武断的;无明确依据的 The judge rejected an arbitrary rule that treated similar cases differently.
consequence noun a result or effect, especially one caused by an action 后果;结果 One consequence of skipping practice was that the team was less prepared.
consistent adjective staying the same over time or agreeing with something else 一致的;始终如一的 The measurements were consistent across all three trials.
contrast noun/verb a clear difference; or to show how things are different 对比;差异 The essay asks students to contrast the two characters' decisions.
derive verb to get or develop something from a source 得到;源自 Many English words derive from Latin and Greek roots.
distinguish verb to recognize or show the difference between things 区分;辨别 The detective could distinguish the real signature from the imitation.
establish verb to create, set up, or show something clearly 建立;确立;证实 The researchers needed more data to establish a reliable pattern.
evaluate verb to judge the quality, value, or effectiveness of something 评估;评价 The committee will evaluate each proposal before choosing one.
evident adjective clear or easy to see or understand 明显的;显而易见的 It became evident that the first explanation did not fit all the facts.
factor noun something that helps cause or influence a result 因素;要素 Cost was one factor in the family's decision to move.
indicate verb to show, point out, or suggest something 表明;指出 The dark clouds indicate that rain may arrive soon.
inevitable adjective certain to happen or impossible to avoid 不可避免的;必然的 Some delays were inevitable once the storm closed the roads.
infer verb to reach a conclusion from evidence or clues 推断 From the muddy footprints, we can infer that someone entered through the garden.
interpret verb to explain or understand the meaning of something 解释;理解 Students interpreted the poem in different but reasonable ways.
justify verb to give good reasons or evidence to show that something is reasonable 证明……合理;为……辩护 The writer must justify the claim with relevant evidence.
maintain verb to keep something going, at the same level, or in good condition 维持;保持 Regular repairs help maintain the bridge in safe condition.
obtain verb to get or acquire something 获得 The researcher obtained permission before interviewing the students.
perspective noun a particular way of seeing or thinking about something 观点;视角 Reading both accounts gave us a broader perspective on the event.
relevant adjective directly connected to the topic or situation 相关的 Only evidence relevant to the question should appear in the report.
reluctant adjective unwilling or hesitant to do something 不情愿的;勉强的 Nina was reluctant to speak until she had checked the facts.
require verb to need something or to make something necessary 需要;要求 The experiment will require careful measurements and accurate records.
significant adjective important or large enough to matter 重要的;显著的 The new evidence caused a significant change in the investigation.
subsequent adjective coming after something else 随后的;后来的 Subsequent tests confirmed the result of the first experiment.
sufficient adjective enough for a particular purpose 足够的;充分的 The team did not yet have sufficient evidence to make a final decision.
valid adjective reasonable, acceptable, or supported well enough to be trusted 有效的;合理的;有根据的 The scientist repeated the procedure to make sure the conclusion was valid.

Section 2 Immediate Retrieval

# Prompt Answer Scores as Box Notes
1 What word means a particular way of viewing or understanding an issue? perspective perspective -
2 What word describes a decision made without a clear principle or reason? arbitrary arbitrary -
3 What word describes results that agree closely across repeated trials? consistent consistent -
4 What word means to keep something at the same level or in good condition? maintain maintain -
5 What word means to get or acquire something? obtain obtain -
6 What word means to show how two things differ? contrast contrast -
7 What word describes something that cannot realistically be avoided? inevitable inevitable -
8 What word means to support a decision or claim with good reasons or evidence? justify justify -
9 What word names a result that follows from an action? consequence consequence -
10 What word describes something that comes later? subsequent subsequent -
11 What word means to explain the meaning of a text, event, or set of data? interpret interpret -
12 What word can mean a method for dealing with a problem? approach approach -
13 What word means to recognize the difference between two similar things? distinguish distinguish -
14 What word means to judge the quality or effectiveness of something? evaluate evaluate -
15 What word describes information directly connected to the question being discussed? relevant relevant -
16 What word describes something important enough to affect the result? significant significant -
17 What word describes something that has become clear from the available facts? evident evident -
18 What word describes wording that allows more than one reasonable meaning? ambiguous ambiguous -
19 What word means to reach a conclusion from clues rather than a direct statement? infer infer -
20 What word describes someone who is hesitant or unwilling to act? reluctant reluctant -
21 What word means to make something different from its original form? alter alter -
22 What word means close to an exact amount but not exact? approximate approximate -
23 What word names one influence that helps produce a result? factor factor -
24 What word describes a conclusion that is reasonable and well supported? valid valid -
25 What word means to make something necessary? require require -
26 What word means to show or suggest something? indicate indicate -
27 What word means to come from or be obtained from a source? derive derive -
28 What word describes an amount that is enough for a particular purpose? sufficient sufficient -
29 What word means to show something clearly enough that it can be accepted as true? establish establish -
30 What word means to examine something closely by looking at its parts? analyze analyze -

Section 3 Context Practice

# Prompt Answer Scores as Box Notes
1 Once the bridge closed, some traffic delays were ______.
TL inevitable TR ambiguous BL arbitrary BR relevant
inevitable inevitable TL
2 The ______ cost of the repairs is $2,000, although the final bill may differ.
TL sufficient TR subsequent BL approximate BR significant
approximate approximate BL
3 The witness could not ______ the two nearly identical cars in the dark.
TL distinguish TR maintain BL evaluate BR justify
distinguish distinguish TL
4 The researchers must ______ permission before collecting personal information.
TL infer TR contrast BL obtain BR maintain
obtain obtain BL
5 The evidence was not ______ to support such a strong conclusion.
TL subsequent TR sufficient BL approximate BR significant
sufficient sufficient TR
6 Regular maintenance helps ______ the machine in safe working condition.
TL require TR alter BL derive BR maintain
maintain maintain BR
7 A serious ______ of ignoring the warning was damage to the equipment.
TL approach TR perspective BL consequence BR factor
consequence consequence BL
8 Reading the diary gave us the soldier's ______ on the event.
TL consequence TR factor BL approach BR perspective
perspective perspective BR
9 The experiment will ______ precise measurements and careful recordkeeping.
TL derive TR require BL indicate BR obtain
require require TR
10 The team changed its ______ when the original method produced unreliable results.
TL approach TR perspective BL factor BR consequence
approach approach TL
11 The essay asks students to ______ the two leaders' responses to the crisis.
TL contrast TR interpret BL establish BR derive
contrast contrast TL
12 Many scientific terms ______ from Greek or Latin roots.
TL obtain TR indicate BL require BR derive
derive derive BR
13 The judges will ______ each design for safety, cost, and usefulness.
TL derive TR evaluate BL indicate BR infer
evaluate evaluate TR
14 The first trial failed, but ______ trials produced more reliable results.
TL consistent TR sufficient BL subsequent BR relevant
subsequent subsequent BL
15 It became ______ that the first explanation could not account for all the data.
TL evident TR reluctant BL arbitrary BR ambiguous
evident evident TL
16 Distance was one ______ the family considered when choosing a new school.
TL consequence TR approach BL perspective BR factor
factor factor BR
17 Mia was ______ to make a claim until she had checked the source carefully.
TL significant TR reluctant BL consistent BR evident
reluctant reluctant TR
18 The argument is ______ only if its evidence is accurate and relevant.
TL arbitrary TR reluctant BL valid BR ambiguous
valid valid BL

Correct-answer positions: TL 5 / TR 4 / BL 5 / BR 4

Section 4 Semantic Discrimination

# Prompt Answer Scores as Box Notes
1 A school changes one section of a schedule while leaving the rest intact. Which lesson word fits most precisely?
TL alter TR maintain BL replace BR obtain
alter alter TL
2 A small numerical change is important enough to alter the study's conclusion. Which lesson word fits most precisely?
TL ambiguous TR approximate BL subsequent BR significant
significant significant BR
3 A student explains what a poem's imagery means. Which lesson word fits most precisely?
TL analyze TR distinguish BL interpret BR infer
interpret interpret BL
4 Five measurements are nearly the same and agree with earlier results. Which lesson word fits most precisely?
TL approximate TR consistent BL relevant BR sufficient
consistent consistent TR
5 A reader reaches a conclusion from clues the author never states directly. Which lesson word fits most precisely?
TL infer TR interpret BL establish BR evaluate
infer infer TL
6 A rule applies to one student for no clear reason or principle. Which lesson word fits most precisely?
TL consistent TR valid BL arbitrary BR relevant
arbitrary arbitrary BL
7 A student gives reasons and evidence showing why a conclusion is reasonable. Which lesson word fits most precisely?
TL obtain TR contrast BL indicate BR justify
justify justify BR
8 Repeated records make a historical pattern clear enough to accept. Which lesson word fits most precisely?
TL maintain TR establish BL evaluate BR indicate
establish establish TR
9 A rising line on a graph suggests that sales are increasing. Which lesson word fits most precisely?
TL justify TR obtain BL indicate BR maintain
indicate indicate BL
10 A piece of evidence directly addresses the question being investigated. Which lesson word fits most precisely?
TL relevant TR arbitrary BL ambiguous BR reluctant
relevant relevant TL
Look-alike trap: "reluctant" resembles RELEVANT but does not share its meaning.
11 A scientist breaks evidence into parts and studies how those parts relate. Which lesson word fits most precisely?
TL summarize TR evaluate BL interpret BR analyze
analyze analyze BR
12 A sentence can reasonably be understood in two different ways because its wording is unclear. Which lesson word fits most precisely?
TL evident TR ambiguous BL consistent BR arbitrary
ambiguous ambiguous TR

Correct-answer positions: TL 3 / TR 3 / BL 3 / BR 3

Section 5 Synonyms

# Prompt Answer Scores as Box Notes
S1 SIGNIFICANT:
TL trivial TR ordinary BL important BR minor
important significant BL
Trivial is tempting because significant means important enough to matter.
S2 EVIDENT:
TL arbitrary TR ambiguous BL hidden BR obvious
obvious evident BR
Hidden is tempting because evident means clear and easy to see.
S3 CONSEQUENCE:
TL cause TR result BL method BR opinion
result consequence TR
Cause is tempting because it is closely related, but consequence is the result.
S4 EVALUATE:
TL assess TR avoid BL obtain BR copy
assess evaluate TL
Obtain is tempting because both are academic verbs, but evaluate means judge quality or value.
S5 INEVITABLE:
TL optional TR uncertain BL unavoidable BR preventable
unavoidable inevitable BL
Preventable is tempting because inevitable events cannot be avoided.
S6 FACTOR:
TL opinion TR method BL result BR influence
influence factor BR
Result is tempting because factors help cause results, but they are not the results themselves.
S7 INTERPRET:
TL measure TR ignore BL explain BR copy
explain interpret BL
Measure is tempting because data can be interpreted after measurement, but interpret means explain meaning.
S8 CONSISTENT:
TL steady TR erratic BL random BR ambiguous
steady consistent TL
Erratic is tempting because it is the opposite of consistent.
S9 ARBITRARY:
TL reasoned TR random BL valid BR consistent
random arbitrary TR
Reasoned is tempting because arbitrary choices lack a clear principle.
S10 PERSPECTIVE:
TL fact TR method BL result BR viewpoint
viewpoint perspective BR
Fact is tempting because a perspective can shape how facts are viewed, but it is not itself a fact.
S11 AMBIGUOUS:
TL certain TR obvious BL explicit BR unclear
unclear ambiguous BR
Explicit is tempting because it is the opposite of ambiguous.
S12 INDICATE:
TL prevent TR alter BL show BR hide
show indicate BL
Hide is tempting because indicate means make something known or visible.
S13 DISTINGUISH:
TL differentiate TR confuse BL combine BR justify
differentiate distinguish TL
Confuse is tempting because distinguish means tell apart rather than mix up.
S14 REQUIRE:
TL avoid TR necessitate BL reduce BR permit
necessitate require TR
Permit is tempting because both can appear in rules, but require means make necessary.
S15 CONTRAST:
TL difference TR effect BL similarity BR source
difference contrast TL
Similarity is tempting because contrast focuses on differences.
S16 OBTAIN:
TL reject TR acquire BL release BR lose
acquire obtain TR
Lose is tempting because it is the opposite of obtain.
S17 INFER:
TL observe TR repeat BL deduce BR state
deduce infer BL
Observe is tempting because inference uses observations, but infer means reach a conclusion from them.
S18 MAINTAIN:
TL damage TR alter BL abandon BR preserve
preserve maintain BR
Alter is tempting because maintain means keep rather than change.
S19 RELEVANT:
TL pertinent TR random BL distant BR unrelated
pertinent relevant TL
Unrelated is tempting because relevant information is directly connected to the topic.
S20 ESTABLISH:
TL erase TR confirm BL question BR weaken
confirm establish TR
Question is tempting because establish means make something clear or accepted.
S21 DERIVE:
TL refuse TR lose BL alter BR obtain
obtain derive BR
Alter is tempting because derived forms can change, but derive means get from a source.
S22 APPROACH:
TL distance TR result BL method BR problem
method approach BL
Distance is tempting because approach can also mean come nearer, but here it means method.
S23 APPROXIMATE:
TL precise TR exact BL rough BR final
rough approximate BL
Exact is tempting because approximate specifically means not exact.
S24 ALTER:
TL obtain TR modify BL observe BR preserve
modify alter TR
Preserve is tempting because both concern an existing thing, but alter means change it.
S25 SUBSEQUENT:
TL later TR earlier BL initial BR prior
later subsequent TL
Prior is tempting because subsequent means coming afterward.
S26 SUFFICIENT:
TL insufficient TR scarce BL partial BR adequate
adequate sufficient BR
Insufficient is tempting because sufficient means enough.
S27 RELUCTANT:
TL hesitant TR certain BL eager BR willing
hesitant reluctant TL
Eager is tempting because it is the opposite of reluctant.
S28 JUSTIFY:
TL weaken TR oppose BL defend BR ignore
defend justify BL
Oppose is tempting because justify means support with reasons.
S29 VALID:
TL arbitrary TR sound BL invalid BR false
sound valid TR
Invalid is tempting because valid describes reasoning that is acceptable and well supported.
S30 ANALYZE:
TL announce TR ignore BL combine BR examine
examine analyze BR
Combine is tempting because analysis may involve parts, but analyze means examine them closely.

Correct-answer positions: TL 7 / TR 7 / BL 8 / BR 8

Section 6 Cumulative Reading

Choosing the Best Courtyard Plan — target words used in the passage: evaluate, approach, consequence, analyze, valid, ambiguous, alter, consistent, factor, infer, distinguish, relevant, reluctant, justify, perspective

Section 7 Reading & Application

# Prompt Answer Scores as Box Notes
1 Why did the council alter one survey question?
TL The wording could be understood in different ways and might produce unreliable responses. TR The question was too expensive to ask. BL The question focused only on teachers. BR The council had already chosen a final plan.
The wording could be understood in different ways and might produce unreliable responses. TL
Passage: “One question was ambiguous, and students understood it in different ways.”
2 What could the council infer from the survey patterns?
TL Outdoor study tables were unnecessary. TR The budget was large enough for every idea. BL Every student preferred the garden. BR No single proposal would satisfy most students.
No single proposal would satisfy most students. BR
Passage: “From the patterns in the responses, the council could infer that no single proposal would satisfy most students.”
3 Why did the council separate personal preference from relevant evidence?
TL It wanted to ignore student opinions completely. TR It wanted the decision to be based on information that directly addressed the courtyard problem. BL It wanted each proposal to use the same amount of space. BR It planned to choose only the cheapest option.
It wanted the decision to be based on information that directly addressed the courtyard problem. TR
Passage: “The council then tried to distinguish personal preference from relevant evidence.”
4 What allowed the council to justify its final recommendation?
TL The council chose the first proposal it received. TR The council refused to revise any idea. BL The council had gathered information and compared the proposals before deciding. BR Every student supported the same plan.
The council had gathered information and compared the proposals before deciding. BL
Passage: “Not everyone received everything they wanted, but the council could justify the decision with information gathered from students and staff.”
5 How did the project change the students' perspective on decision-making?
TL They learned that good decisions depend on evidence, competing views, and willingness to revise ideas. TR They concluded that one person's preference should guide the group. BL They decided evidence matters less than enthusiasm. BR They learned that quick voting is always best.
They learned that good decisions depend on evidence, competing views, and willingness to revise ideas. TL
Passage: “They learned that careful choices usually depend on more than enthusiasm for a favorite idea.”
6 Describe a disagreement in which hearing another person's perspective could reveal relevant information you had missed. If two students disagree about a group project, hearing the other student's perspective might reveal relevant information about deadlines or responsibilities that one person did not know. -
Model response: If two students disagree about a group project, hearing the other student's perspective might reveal relevant information about deadlines or responsibilities that one person did not know.
7 Choose a school rule and explain how you would analyze whether it works. Then justify whether you would keep or change it. I would analyze attendance and behavior data before and after the rule began. If the evidence showed improvement, I could justify keeping it. -
Model response: I would analyze attendance and behavior data before and after the rule began. If the evidence showed improvement, I could justify keeping it.
8 Write about a decision that could have an important consequence. Explain whether that consequence is inevitable or could be avoided. Ignoring a major assignment could have the consequence of a lower grade, but that result is not inevitable because the student could ask for help and finish the work on time. -
Model response: Ignoring a major assignment could have the consequence of a lower grade, but that result is not inevitable because the student could ask for help and finish the work on time.
9 Give an example of a situation where an approximate amount is sufficient and another where an exact amount is required. An approximate travel time may be sufficient when planning when to leave home, but an exact medication dose is required for safety. -
Model response: An approximate travel time may be sufficient when planning when to leave home, but an exact medication dose is required for safety.

Correct-answer positions: TL 2 / TR 1 / BL 1 / BR 1

Section 8 Final Retrieval

# Prompt Answer Scores as Box Notes
1 Repeated results agree closely with one another. Which vocabulary word describes them? consistent consistent -
2 An event cannot be avoided under the circumstances. Which vocabulary word describes it? inevitable inevitable -
3 A reader reaches a conclusion from clues that are not directly explained. Which vocabulary word fits? infer infer -
4 A graph points to a likely increase in sales. Which vocabulary word fits? indicate indicate -
5 A piece of evidence connects directly to the question under discussion. Which vocabulary word describes it? relevant relevant -
6 An argument is reasonable and supported well enough to be trusted. Which vocabulary word fits? valid valid -
7 A researcher breaks evidence into parts and studies the relationships among them. Which vocabulary word fits? analyze analyze -
8 A team adopts a new method for solving a problem. Which vocabulary word names the method? approach approach -
9 A value is close to the true number but not exact. Which vocabulary word describes it? approximate approximate -
10 The answer becomes clear from the available clues. Which vocabulary word describes it? evident evident -
11 A student can tell two similar concepts apart. Which vocabulary word fits? distinguish distinguish -
12 A student successfully gets permission to use a source. Which vocabulary word fits? obtain obtain -
13 Several sources make a historical fact clear enough to accept. Which vocabulary word fits? establish establish -
14 A word comes from an older language source. Which vocabulary word describes this relationship? derive derive -
15 A speaker gives reasons and evidence showing a decision is reasonable. Which vocabulary word fits? justify justify -
16 A change is important enough to affect the outcome. Which vocabulary word describes it? significant significant -
17 A choice produces a later result. Which vocabulary word names that result? consequence consequence -
18 A task cannot be completed unless one condition is met. Which vocabulary word fits? require require -
19 A statement supports two different reasonable interpretations. Which vocabulary word describes it? ambiguous ambiguous -
20 A judge considers quality, effectiveness, and value before deciding. Which vocabulary word fits? evaluate evaluate -
21 One influence contributes to a final outcome. Which vocabulary word names it? factor factor -
22 A witness describes an event from a particular point of view. Which vocabulary word names that point of view? perspective perspective -
23 Regular work keeps equipment in good condition. Which vocabulary word fits? maintain maintain -
24 A writer focuses on how two ideas differ. Which vocabulary word fits? contrast contrast -
25 A person hesitates to act because they do not really want to do it. Which vocabulary word fits? reluctant reluctant -
26 A student explains what a poem or graph means. Which vocabulary word fits? interpret interpret -
27 A rule is imposed with no clear principle explaining why it exists. Which vocabulary word fits? arbitrary arbitrary -
28 A draft changes after feedback but keeps the same main idea. Which vocabulary word names the act of changing it? alter alter -
29 A second test occurs after the first one. Which vocabulary word describes the later test? subsequent subsequent -
30 There is enough evidence for the limited conclusion being made. Which vocabulary word fits? sufficient sufficient -