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(yú))．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(yú)很像陸地上的哺乳動(dòng)物，最后一句舉了一些例子來(lái)說(shuō)明這一點(diǎn)。 sign的意思是“符號(hào)，特征”，鯨魚(yú)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(yú)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(lái)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(lái)推測(cè)選哪個(gè)詞。鯨魚(yú)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(guò)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(yú)的潛水能力。鯨魚(yú)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(shuō)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(lái)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(yú)聚集氧氣，故選D。
13．答案為B。上文談到鯨魚(yú)為什么能夠在水下承受巨大的壓力，科學(xué)家們還沒(méi)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”。
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(yú))．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(yú)很像陸地上的哺乳動(dòng)物，最后一句舉了一些例子來(lái)說(shuō)明這一點(diǎn)。 sign的意思是“符號(hào)，特征”，鯨魚(yú)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(yú)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(lái)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(lái)推測(cè)選哪個(gè)詞。鯨魚(yú)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(guò)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(yú)的潛水能力。鯨魚(yú)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(shuō)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(lái)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(yú)聚集氧氣，故選D。
13．答案為B。上文談到鯨魚(yú)為什么能夠在水下承受巨大的壓力，科學(xué)家們還沒(méi)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”。