2013年職稱英語(yǔ)綜合類A級(jí)完形填空練習(xí)題及答案(8)

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　　The Greatest Mystery of Whales

　　The whale is a warm-blooded，air-breathing animal，giving birth to its young alive，sucking them--and，like all mammals，originated on land.There are many front flippers(鰭狀肢)，used for steering and stability, are traces of feet.______(1)of this.Its Immense strength is______(2)into the great body of the big whales，and in fact most of a whale’s body is one gigantic muscle.The blue whale’s pulling strength has been estimated ______(3)400 horsepower.One specimen was reported to have towed(拖)a whaling vessel for seven hours at the______ (4) of eight knot (節(jié)). An angry whale will ______ (5) A famous example of this was the fate of Whaler Essex, ______ (6)was sunk off the coast of South America early in the last century.

　　More recently, steel ships have ______(7)their plates buckled(使彎曲)in the same way. Sperm whales(抹香鯨)were known to seize the old-time whaleboats in their jaws and crush Them. The greatest ______ (8)of whales is their diving ability.The sperm whale dives to the Bottom for his______ (9)food，the octopus(章魚).In that search he is known to go as far Down as 3,200 feet, where the.______ (10)is 1,400 pounds，to a square inch.Doing so he Will ______ (11)underwater long as one hour.Two special skills are involved in this storing up enough______ (12)(all whales are air―breathed)and tolerating the great change in pressure.Just how he does it scientists have not ______(13).It is believed that some of the oxygen is stored in a special______ (14)of blood vessels，rather than just held in the lungs.And it is believed that a special kind of oil in his head is some sort of compensating mechanism that ______ (15)adjusts the internal pressure of his body.But since you can’t bring a live whale into the laboratory for study, no one knows just how these things work.

　　1 A aspects B signs C ways D reasons

　　2 A worked B divided C built D moved

　　3 A at B in C of D with

　　4 A number B degree C distance D rate

　　5 A abandon B attack C leave D board

　　6 A as B who C which D that

　　7 A had B operated C Seen D caught

　　8 A interest B job C danger D mystery

　　9 A favorite B fast C new D sufficient

　　10 A depth B pressure C level D size11 A set B become C remain D rest

　　12 A heat B energy C food D oxygen

　　13 A witnessed B determined C applied D calculated

　　14 A system B place C arrangement D equipment

　　15 A mentally B artificially C manually D automatically

　　參考答案：B C A D B C A D A B C D B A D

　　答案解析：

　　1.答案為B。第一段講到鯨魚很像陸地上的哺乳動(dòng)物，最后一句舉了一些例子來說明這一點(diǎn)。 sign的意思是“符號(hào)，特征”，鯨魚具有陸地上哺乳動(dòng)物的一些特征，故選B。

　　2.答案為C。something is built into…的意思是“把……裝(建、插)入……”，這里指鯨魚生有 巨大的氣力。其他幾個(gè)選項(xiàng)意思上講不通。

　　3.答案為A。只能用介詞at，不能用其他介詞。

　　4.答案為D。rate表示“速度”，從上下文來講，選D意思才講得通。

　　5.答案為B。此題亦必須根據(jù)上下文的意思來推測(cè)選哪個(gè)詞。鯨魚被惹怒后會(huì)攻擊船只，所以選B。

　　6.答案為C。這里是一非限定性定語(yǔ)從句，關(guān)系代詞作 主語(yǔ)，用which，故選C。

　　7.答案為A。have + something+過去分詞是一固定結(jié)構(gòu)，此處只能選A。

　　8.答案為D。本題所在句子為該段主題句，談的是鯨魚的潛水能力。鯨魚的潛水能力很強(qiáng)，能下潛到很深的地方，科學(xué)家們不解，所以說是個(gè)迷，故選D。

　　9.答案為A。雖然本題的幾個(gè)選項(xiàng)都能與food搭配，但從上下文意思來講，只有A正確。

　　10.答案為B?？崭窈竺娴拿~是pound，重量單位，據(jù)此可以判斷選B，因?yàn)槠渌麕讉€(gè)選項(xiàng)不能和pound搭配。

　　11.答案為C。呆在水下要用動(dòng)詞remain，其他幾個(gè)動(dòng)詞放入空格處意思講不通。

　　12.答案為D。此題也必須在讀懂上下文意思的基礎(chǔ)上才能作出判斷，這里指鯨魚聚集氧氣，故選D。

　　13.答案為B。上文談到鯨魚為什么能夠在水下承受巨大的壓力，科學(xué)家們還沒有找到答案。 選項(xiàng)中的deterrmine的意思是“確定”，此詞放入空格處意思講得通，其他幾個(gè)選項(xiàng)講不通，故選B。

　　14.答案為A。special雖然和幾個(gè)選項(xiàng)都能搭配使用，但只有選項(xiàng)A意思上講得通，故A為正確答案

　　15.答案為D。此題亦需根據(jù)上下文的意思作出判斷。automatically的意思是“自動(dòng)地”。