2008年度全国职称英语等级考试综合类（A级）

their diving ability. The sperm whale can 　　　　（58）the bosom for his favorite food, the octopus（章鱼）. 　　　　（59）that search he is known to go as far down as 3,200 feet, where the pressure is l,400 pounds. to the square inch. Doing 　　　　（60）he will remain submerged（水下的）as long as one hour. Two feats（绝技）are involved in this：storing up enough 　　　　（61）（all whales are air—breathed）and withstanding the great change in pressure. Just 　　　　（62）he does it scientists have not determined. It is believed that some of the oxygen is stored in a special system of blood vessels, rather than just held in the lungs. And 　　　　（63）is believed that a special kind of oil in his head is some sort of compensating mechanism that automatically adjusts the internal pressure of his body. But 　　　　（64）you can't bring a live whale into the laboratory for study, no one____（65）just how these things work.

51 A Their        B It's      C Theirs        D Its
52 A strength      B width     C height        D length
53 A eaten         B crashed    C towed（拖）    D lifted
54 A distance      B rate       C voyage       D sail
55 A picture       B film       C example      D book
56 A off          B of         C above        D over
57 A hit          B seize      C damage       D kick
58 A fly to        B jump on    C dive to      D crawl on
59 A In           B On         C By          D At
60 A so           B such       C above        D the same
61 A water         B oxygen     C energy       D heat
62 A what         B who        C how          D which
63 A it            B he         C she          D there
64 A because of  　B due to     C since        D owing to
65 A communicates　B  knows    C hears