181.?He?has?left?his?book?here?on?_____,?so?that?you?can?read?it.
A.?purpose????B.?intention????C.?aim????D.?meaning

[答案]A.?purpose.

[注釋]on?purpose是介詞習(xí)語(yǔ)，意為“故意地”。如用intention,則應(yīng)說(shuō)by?intention故意地。

182.?The?magician?picked?several?persons?from?the?audience?and?asked?them?to? help?him?with?the?performance.
A.?by?accident????B.?on?occasion?

C.?at?random??????D.?on?an?average

[答案]C.?at?random.

[注釋]at random(=without aim or purpose)隨便地，胡亂地：His clothes were scattered about the room at random.
By accident意外地；on occasion偶爾；on an average平均計(jì)算。

183.?The?open?university?was?started?in?order?to?help?those?who?_____?having?a?university?education?when?they?were?young.
A.?stopped????B.?failed????C.?missed????D.?ceased

[答案]C.?missed.

[注釋]miss?doing?sth.沒(méi)有做某事：I?missed?seeing?the?film?when?it?was?shown?at?school.(學(xué)校放映那部電影時(shí)，我沒(méi)有能去看。)

184.?His?_____of?the?aeroplane?was?correct?in?every?detail?and?could?really?fly.
A.?shape????B.?pattern????C.?design????D.?model

[答案]D.?model.

[注釋]model此句中意為“（飛機(jī)的）模型”。

185.?If?you?_____?your?demand,?then?maybe?you?will?have?more?chance?of?? getting?what?you?want.
A.?conduct????B.?dismiss????C.?grant????D.?moderate

[答案]D.?moderate.

[注釋]moderate(=make?or?become?less?violent?or?extreme)節(jié)制，緩和，減輕。

186.?Don't?_____?the?news?to?the?public?until?we?give?you?the?go-ahead?(許可，準(zhǔn)許).
A.?release????B.?discard????C.?relieve????D.?retain

[答案]A,?release.

[注釋]release(=allow news to be published)發(fā)布（新聞）：Details of the scheme have not yet been released to the public.(這項(xiàng)計(jì)劃的細(xì)節(jié)尚未向公眾發(fā)布。)relieve 1)減輕（痛苦，緊張情緒等）：What will relieve a headache? This will help to relieve our hardship. 2)使放心，使寬慰：The good news relieved us, for we had been very anxious. 3)賑濟(jì)，救濟(jì)：The fund is for relieving distress among the flood victims. 4)relieve...from(of)解除，免除； a. This medicine will help to relieve you from your pain. b. He was relieved of his (= keep; continue to have or hold)保持，繼續(xù)保有：1)She retains a clear memory of her schooldays. 2)You must retain your tickets.

187.?The?storm?sweeping?over?this?area?now?is?sure?to?cause?_____?of?? vegetables?in?the?coming?days.
A.?rarity???B.?scarcity??C.?invalidity??D.?variety

[答案]B.?scarcity.

[注釋]scarcity(=the state of being scarce)缺乏；不足（指原本充足之物暫時(shí)在數(shù)量上的缺乏）。例如：The scarcity of fruit was caused by the drought.(水果的供應(yīng)不足是干旱所引起的。)rarity(=sth. uncommon, unusual or sth. valued because rare)珍稀，稀少：Snow is a rarity around the equator.(雪在赤道周圍是罕見(jiàn)之物。)invalidity(=making weak by illness; not suitable for use)無(wú)效性，喪失工作能力。Variety(=difference of condition or quality)變化，多樣化。

本題譯文：目前席卷這一地區(qū)的暴風(fēng)雨今后肯定會(huì)引起蔬菜短缺。

188.?Jack?almost?fell?off?the?cliff,?but?managed?to?_____?until?help?came.
A.?keep?on???B.?catch?on??C.?count?on????D.?hang?on

[答案]D.?hang?on.

[注釋]hang on(=hold fast, keep hold)牢牢抓住，抓緊不放：Help! I can't hang on much longer.(救命??！我支持不住啦。)keep on(doing sth.)繼續(xù)（做......）；catch on 理解；count on 指望，依賴。

本題譯文：杰克差點(diǎn)從懸崖上掉下來(lái)，但得以抓住不放直到得救。

189.?Experts?say?walking?is?one?of?the?best?ways?for?a?person?to?_____?healthy.
A.?preserve????B.?stay????C.?maintain????D.?reserve

[答案]B.?stay.

[注釋]preserve, stay, maintain, reserve這4個(gè)詞均有“保持”，“維持”之意。stay后可接形容詞作表語(yǔ)：The weather stayed wet for three days.其他3個(gè)詞均為及物動(dòng)詞。Preserve(=keep safe from decay, risk, harm, danger, going bad etc.)保存，保護(hù)：1)Policemen preserve order in the streets.(警察在街上維持秩序。) 2)We must preserve our natural resources.(我們必須保護(hù)自然資源。)3)You paint woodwork to preserve it.(你油漆木制品以防腐爛。)Maintain(=keep up)保持，維持，維修。Reserve(=keep for a special purpose; store)保留，預(yù)定：1)I'll reserve my opinion at his time,(這時(shí)我將保留我的看法。) 2)I'll phone up today and reserve a room.(我今天將打電話預(yù)定一個(gè)房間。)

本題譯文：專家們說(shuō)，步行是一個(gè)人保持健康的最好方法之一。

190.?Expected?noises?are?usually?more?_____?than?unexpected?ones?of?the?like?? magnitude.
A.?manageable????B.?controllable
C.?tolerable???????? D.?perceivable

[答案]C.?tolerable.

[注釋]tolerable(=fairly good, not too bad)可忍受的：The pain has become tolerable. manageable可處理的；可管理的；controllable可控制的；perceivable可覺(jué)察的。

本題譯文：料想到的嗓音通常情況下比起等量的意外嗓音來(lái)說(shuō)是可以忍受的。