21.Many scientists are looking for ways to ______ people's lives.
A. protest
B. protract
C. prolong
D. profound
正確答案：C
答案解析：譯文：許多科學(xué)家在尋找延長(zhǎng)生命的方法。選項(xiàng)AB都有延長(zhǎng)的意思，prolong指的是時(shí)間，生命等等的延長(zhǎng)，而protract只指時(shí)間上的拖延，所以答案為C.
22.The ______ in Janet's character has hindered her from advancement in her career.
A. weakness
B. merit
C. defect
D. shortcoming
正確答案：C
答案解析：譯文：詹妮特的性格缺陷阻礙了她事業(yè)進(jìn)步。weakness意為"弱點(diǎn)；嗜好"；merit意為"優(yōu)點(diǎn)，長(zhǎng)處"；defect意為"缺 點(diǎn)，缺陷"；shortcoming意為"缺點(diǎn)，短處".
23.He firmly ______ out that he had met with Rosaline.
A. ruled
B. kept
C. declaimed
D. declined
正確答案：A
答案解析：譯文：他堅(jiān)決否認(rèn)曾與羅莎琳接觸過(guò)。rule out"否認(rèn)，不承認(rèn)".
24.His answer was so confused that I could hardly make any ______ of it at all.
A. explanation
B. meaning
C. sense
D. interpretation
正確答案：C
答案解析：譯文：他的答案很不清楚，我根本弄不懂。sense意為"意義；含義"，短語(yǔ)make sense of意為"弄懂…的意思"；explanation意為"解釋，說(shuō)明，闡述"，側(cè)重說(shuō)明事件的真相、原因；meaning意為"意義，意思；含義"，但不能在make sense of 短語(yǔ)中代替sense；interpretation意為"解釋，說(shuō)明，闡明"，比較正式。
25.By cutting down trees we ______ the natural home of birds and animals.
A. harm
B. hurt
C. injure
D. damage
正確答案：D
答案解析：譯文：我們砍伐樹(shù)木的行為損壞了鳥(niǎo)獸的自然家園。damage意為"加害于…，損傷…"；harm意為"對(duì)…有害"；hurt意為"疼痛，受傷，（精神上）傷害"；injure意為"使受傷"，身體受外力傷害。
26.We went on a（n） ______ to the mountain yesterday.
A. excursion
B. trip
C. tour
D. travel
正確答案：A
答案解析：譯文：昨天我們到那座山里進(jìn)行了一次遠(yuǎn)足觀光。excursion意為"遠(yuǎn)足，短途旅行"；trip意為"旅游出行；行程"；tour意為"游歷；觀光"；travel意為"（長(zhǎng)途）旅行".
27.When Sarah and I ______ on an article for the school newspaper， we found it difficult to work together.
A. compiled
B. gathered
C. collaborated
D. collected
正確答案：C
答案解析：譯文：當(dāng)我和薩拉為校報(bào)合作一篇文章時(shí)，我們發(fā)現(xiàn)很難在一起工作。collaborate意為"合作，合著"；compile意為"匯集；編輯"；gather意為"聚會(huì)，集會(huì)"；collect意為"收集；集合".
28.Postal ______ are determined by the class and weight of the parcel mailed.
A. taxes
B. payment
C. fees
D. premium
正確答案：C
答案解析：譯文：郵資是根據(jù)所郵包裹的等級(jí)和重量來(lái)定的。fee意為"費(fèi)（如會(huì)費(fèi)，入場(chǎng)費(fèi)，手續(xù)費(fèi)等）"；tax意為"稅，稅款"；payment意為"支付，付款"；premium意為"津貼；酬金".
29.My father is so deaf that he has to use a hearing ______.
A. help
B. aid
C. support
D. tool
正確答案：B
答案解析：我父親耳聾得厲害，不得不使用助聽(tīng)器。aid意為"輔助器具"；help意為"幫助"；support意為"支持"；tool意為"工具".
30.The ______ of beer and alcohol in New Zealand is very high.
A. consumption
B. use
C. drink
D. absorption
正確答案：A
答案解析：譯文：在新西蘭，啤酒和白酒的消費(fèi)量很大。consumption意為"消費(fèi)量"；use意為"使用，用途"；drink意為"飲料"；absorption意為"吸收".
A. protest
B. protract
C. prolong
D. profound
正確答案：C
答案解析：譯文：許多科學(xué)家在尋找延長(zhǎng)生命的方法。選項(xiàng)AB都有延長(zhǎng)的意思，prolong指的是時(shí)間，生命等等的延長(zhǎng)，而protract只指時(shí)間上的拖延，所以答案為C.
22.The ______ in Janet's character has hindered her from advancement in her career.
A. weakness
B. merit
C. defect
D. shortcoming
正確答案：C
答案解析：譯文：詹妮特的性格缺陷阻礙了她事業(yè)進(jìn)步。weakness意為"弱點(diǎn)；嗜好"；merit意為"優(yōu)點(diǎn)，長(zhǎng)處"；defect意為"缺 點(diǎn)，缺陷"；shortcoming意為"缺點(diǎn)，短處".
23.He firmly ______ out that he had met with Rosaline.
A. ruled
B. kept
C. declaimed
D. declined
正確答案：A
答案解析：譯文：他堅(jiān)決否認(rèn)曾與羅莎琳接觸過(guò)。rule out"否認(rèn)，不承認(rèn)".
24.His answer was so confused that I could hardly make any ______ of it at all.
A. explanation
B. meaning
C. sense
D. interpretation
正確答案：C
答案解析：譯文：他的答案很不清楚，我根本弄不懂。sense意為"意義；含義"，短語(yǔ)make sense of意為"弄懂…的意思"；explanation意為"解釋，說(shuō)明，闡述"，側(cè)重說(shuō)明事件的真相、原因；meaning意為"意義，意思；含義"，但不能在make sense of 短語(yǔ)中代替sense；interpretation意為"解釋，說(shuō)明，闡明"，比較正式。
25.By cutting down trees we ______ the natural home of birds and animals.
A. harm
B. hurt
C. injure
D. damage
正確答案：D
答案解析：譯文：我們砍伐樹(shù)木的行為損壞了鳥(niǎo)獸的自然家園。damage意為"加害于…，損傷…"；harm意為"對(duì)…有害"；hurt意為"疼痛，受傷，（精神上）傷害"；injure意為"使受傷"，身體受外力傷害。
26.We went on a（n） ______ to the mountain yesterday.
A. excursion
B. trip
C. tour
D. travel
正確答案：A
答案解析：譯文：昨天我們到那座山里進(jìn)行了一次遠(yuǎn)足觀光。excursion意為"遠(yuǎn)足，短途旅行"；trip意為"旅游出行；行程"；tour意為"游歷；觀光"；travel意為"（長(zhǎng)途）旅行".
27.When Sarah and I ______ on an article for the school newspaper， we found it difficult to work together.
A. compiled
B. gathered
C. collaborated
D. collected
正確答案：C
答案解析：譯文：當(dāng)我和薩拉為校報(bào)合作一篇文章時(shí)，我們發(fā)現(xiàn)很難在一起工作。collaborate意為"合作，合著"；compile意為"匯集；編輯"；gather意為"聚會(huì)，集會(huì)"；collect意為"收集；集合".
28.Postal ______ are determined by the class and weight of the parcel mailed.
A. taxes
B. payment
C. fees
D. premium
正確答案：C
答案解析：譯文：郵資是根據(jù)所郵包裹的等級(jí)和重量來(lái)定的。fee意為"費(fèi)（如會(huì)費(fèi)，入場(chǎng)費(fèi)，手續(xù)費(fèi)等）"；tax意為"稅，稅款"；payment意為"支付，付款"；premium意為"津貼；酬金".
29.My father is so deaf that he has to use a hearing ______.
A. help
B. aid
C. support
D. tool
正確答案：B
答案解析：我父親耳聾得厲害，不得不使用助聽(tīng)器。aid意為"輔助器具"；help意為"幫助"；support意為"支持"；tool意為"工具".
30.The ______ of beer and alcohol in New Zealand is very high.
A. consumption
B. use
C. drink
D. absorption
正確答案：A
答案解析：譯文：在新西蘭，啤酒和白酒的消費(fèi)量很大。consumption意為"消費(fèi)量"；use意為"使用，用途"；drink意為"飲料"；absorption意為"吸收".