吉林省学位英语考试真题
In cases where there is little or no water to drink, the body tries to do the opposite thing. Again, it must keep the salt level in the blood constant. Because it attempts to stop water from leaving the body and to increase its secretion of salt. But, as with the escaping salt, it cannot be completely successful. Some water still leaves and the person eventually dies of thirst. In short, the body's normal needs for salt and for water are both parts of the same important need to keep the salt level in the blood constant.
36. Some African people once drank animal urine .
A）when they were going to die
B）because they were thirsty
C）because there was litter salt
D）because they were short of water
37. In order to adjust to the loss of salt, the body .
A）lose some blood
B）speeds up its secretion of water
C）speeds up its secretion of salt
D）is drying up slowly
38. Which of the following statement is NOT the result of a salt in the body?
A）The body secretes more water
B）The body dries up
C）The person dies of thirst
D）The person gets fatter
39. what does the word "constant"（Line 2,Pare.3）mean in the passage?
A）The same B）Amount C）Going up and down D）Changing
40. What is the main idea of the passage?
A）Salt is very important .
B）If their blood salt level is not constant, human being may die.
C）The amount of salt in the body is secreted.
D）People can die of thirst.
PartⅢ Cloze
A high-pitch"wee-o-wee-o-wee-o-wee"whistle might not sound like much to you, but it's exactly how a dolphin might introduce itself.
Because their 41 is limited in the ocean, dolphins create individual"name"calls to communicate their 42 to friends and families. But it's not as just recognizing a voice, 43 most animals. A new study 44 that the calls contain frequency changes that dolphins.
Humans are one of the 45 animals that use sound modulation 46 simple voice differences to 47 individuals. For example, a person can recognize the name "John" 48 it's being said by Gilbert Gottfried or James Earl Jones.
Scientists have long known that dolphins identify themselves 49 names, but the belief was that, like some monkeys, the animal's voice was the key 50 of the call.
A team of researchers 51 by Vincent Janik of the University of St. Andrews in Scotland temporarily 52 seven male and female bottlenose dolphins in Florida. Janik and his 53 recorded the name calls of each dolphin, and digitally 54 the voice features of each call.
They then played the computerized calls and digital versions of other 55 calls though underwater speakers 56 the dolphins were held. In nine of 14 57 ,the dolphin would turn more 58 toward the speakers-a（n） 59 echnique for gauging a dolphin's interest －if it heard a whistle 60 the name of a close relative. As is turned out that dolphins communicate each other by calling their individual names.
41. A）view B）sigh C）vision D）picture
42. A）signs B）tracks C）whereabouts D）origins
43. A）like B）as if C） as though D）as
44. A）reveals B）refutes C）remarks D） reflects
45. A）a lot of B） a few C） few D）less
上一页 [1] [2] [3] [4] [5] [6] 下一页