241.?Circus?tigers,?although?they?have?been?tamed,?can?_____?attack?their?? trainer.
A.?unexpectedly????B.?deliberately
C.?reluctantly?????D.?subsequently

[答案]A.?unexpectedly.

[注釋]unexpectedly 出乎意料地。例如：He unexpectedly failed to get the job.(他出乎意料沒有得到這件工作。)又如：We met each other unexpectedly. (我們不期而遇。)deliberately故意地：I believe the house was deliberately set fire to.(我相信這房子是有人故意放火燒的。)reluctantly 不情愿地，勉強地：She agreed, very reluctantly, to help. (她十分買鳥槍地同意幫忙。) subsequently后來，隨后：He escaped from prison but was subsequently recaptured. (他越獄逃跑了，但后來又被抓回來。)

本題譯文：馬戲團地老虎雖然已被馴服，但也會出乎意料地襲擊馴獸師。

242.?Stressful?environments?lead?to?unhealthy?behaviors?such?as?poor?eating?? habits,?which?_____?increase?the?risk?of?heart?disease.
A.?in?turn??B.?in?return??C.?by?chance?D.?by?turns

[答案]A.?in?turn。

[注釋]in turn (插入語)轉而，依次，而又：We need revision of estimated sales and this, in turn , will mean revision in production schedule. (我們必須修改預計銷量，而這反過來又意為這修訂生產(chǎn)計劃。)in return 作為報答: I wish I could do something for you in return. (我要是能為你做點事作為報案就好了。)I gave him a present but he gave me nothing in return.（我送給他一份禮物，可他卻什么也不給我作為答謝。）by chance (=by accident)偶然地；無意中：I meet him by chance on Fifth Avenue.(我偶然在第5大街上遇到他。)by turns 輪流地，依次：There were twelve of us in the boat and we rowed by turns.(船上有12人，我們輪流劃船。)

本題譯文：緊張的環(huán)境會導致諸如不良的飲食習慣等不健康行為，而后者又會增加患心臟病的危險。

243.?The?patients?believe?that?the?doctor?knows?exactly?how?to?put?them?_____.
A.?correct????B.?perfect????C.?right????D.?well

[答案]C.?right。

[注釋]put sth. /sb. right 糾正；治好，使恢復健康：Since man has done so much damage, it is up to man to put the matters right. (既然人類已造成了如此巨大的損害，人類又哲人糾正這種狀況。)又如：This medicine will soon put you right. (這藥很快會使你恢復健康。)其他3個選擇均不能與put 構成習語，故不能入選。

本題譯文：病人相信醫(yī)生清楚地知道怎樣治好他的病。

244.?They?decided?to?leave?the?waiter?a?big?_____?because?the?food?and?service?had?been?excellent.
A.?note????B.?reward????C.?tip????D.?gift

[答案]C.?tip。

[注釋]tip?本題中意為“小費”。

245.?And?you?find?that?you're?not?to?be?_____?with?a?position?of?real?? responsibility.
A.?offered??B.?trusted???C.?furnished?D.?retained

[答案]B.?trusted。

[注釋]trust?sb.?with?sth.?把某事托付給某人：I?can't?trust?him?with?my?car.(我不能把我的車托付給他。)本題譯文：你認為不會把真正有責任的工作托付給你。

246.?There?was?a?good?_____?of?the?countryside?from?the?front?of?the?bus.
A.?sight????B.?view????C.?scene????D.?scenery

[答案]B.?view。

[注釋]view在本句中意指“看，眺望”，如：It?is?a?large?room?with?a?view?of?the?doctor's?well-kept?garden.?(這是一間大房間，從房間里能看到醫(yī)生精心管理的花園。)本題譯文：坐在汽車的前排座位可以清楚地看到鄉(xiāng)間的景色。

247.?In?aerospace?devices?the?weight?of?the?necessary?power?producing?? equipment?is?_____.
A.?vital????B.?possible????C.?capable????D.?reliable

[答案]A.?vital。

[注釋]vital?極其重要的。本題譯文：在航空航天裝置中必要的動力設備的重量問題是至關緊要的。

248.?This?album?is?_____?as?it?was?the?only?one?ever?signed?by?the?President.
A.?unusual????B.?unique????C.?rare????D.?special

[答案]B.?unique。

[注釋]unique(某一類中)獨一無二的。如選unusual(不尋常的，獨特的)，雖然也說得過去，但毫無疑問，unique是最佳選擇，因為它的后面the only one相呼應。Special專門的，專用的，例如；They went to London on a special train.[他們搭一班專車（或加班車）去倫敦。]rare稀有的，罕見的，如：rare metals(稀有的金屬)。Singular單數(shù)的。

249.?Trains?stop?here?in?order?to?_____?passengers?only.
A.?get?off????B.?pick?up????C.?pull?up????D.?pull?in

[答案]B.?pick?up

[注釋]pick?up?passages(接運旅客上車。)

pull?in(火車)進站；（船）靠岸；pull?up停車；get?off下車。

250.?He?_____?the?place?where?he?had?been?bitten?by?an?insect.
A.?snatched?B.?scratched??C.?squeezed??D.?stretched

[答案]B.?scratched.

[注釋]scratch抓，搔。此外，有一常用習語：scratch?one's?head?over?sth.對某事迷惑不解，搔頭皮。Snatch掠奪；stretch拉長，延伸，撐大；squeeze壓榨，擠。