单选题According to Dr. McFarland, accident repeaters are ______.

单选题It is hard to track the blue whale, the ocean's largest creature which has almost been killed off by commercial whaling and is now listed as an endangered species. Attaching radio devices to it is difficult and visual sightings are too unreliable to give real insight into its behavior. So biologists were delighted early this year when with the help of the Navy they were able to track a particular blue whale for 43 days monitoring its sounds. This was possible because of the Navy's formerly top-secret system of underwater listening devices spanning the oceans. Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies, Earth scientists announced at a news conference recently that they had used the system for closely monitoring a deep-sea volcanic eruption for the first time and that they plan similar studies. Other scientists have proposed to use the network for tracking ocean currents and measuring changes in ocean and global temperatures. The speed of sound in water is roughly one mile a second, slower than through land but faster than through air. What is most important, different layers of ocean water can act as channels for sounds focusing them in the same way a stethoscope does when it carries faint noises from a patient's chest to a doctor's ear. This focusing is the main reason that even relatively weak sounds in the ocean especially low-frequency ones can often travel thousands of miles.

单选题{{B}}Passage 4{{/B}} Very early in the morning, before daybreak for the greater part of the year, the men would throw on their clothes, breakfast on bread and fat, snatch the dinner baskets which had been packed for them overnight, and hurry off across the fields to the farm. Getting the boys off was a more difficult matter. Mothers would have to call and shake and sometimes pull boys of eleven or twelve out of their warm beds in a winter morning. Most of the young and those in the prime of life were thickset, red-faced men of good medium height and enormous strength, who prided themselves on the weights they could carry and boasted of never having had an ache nor a pain in their lives. The elders stooped, had gnarled and swollen hands and, walked badly, for they felt the effects of a life spent out of doors in all weathers and of the rheumatism which tried most of them. They still spoke the dialect, in which the vowels were not only broadened, but in many words doubled. Boy was "boo-oy," cola "coo-al" and so on. In other words, syllables were slurred and words were run together, as "brenbu'er" for bread and butter. They had hundreds of proverbs and sayings and their talk was stiff with simile. Nothing was ever simply hot, cold or colored; it was "as hot as hell, as cold as ice, as green as grass" or "as yellow as a guinea". To be nervy was to be "like a cat on hot bricks"; to be angry , "mad as a bull", or any one might be "poor as a rat", "sick as a dog" , "as ugly as sin" , "full of the milk of human kindness", or "stinking with pride" . The men's incomes were the same to a penny (ten shillings a week); their circumstances, pleasures, and their daily field work were shared in common but in themselves they differed, as other men of their day differed, in country and town. Some were intelligent, others slow in the uptake, some were kind and helpful, others selfish. A stranger would not have found the dry humor of the Scottish peasant, or the racy wit and wisdom of Thomas Hardy's Wessex. These men's minds were east in a heavier mould and moved more slowly. Yet there were occasional gleams of quiet fun. When Edmund was crying because his pet magpie had flown away one man told him to go and tell Mrs. Andrews about it (she was the village gossip) "and you'll soon know where she's been seen." Their favorite virtue was endurance. Not to flinch from pain or hardship was their ideal. A young woman would say to the midwife after her first confinement, "I didn't flinch, did I? Oh, I do hope I didn't flinch", and a man would tell how he had taken a piece of fence to fight off a charging bull, and not he but the bull had "flinched."

单选题We can infer from the text that ______.

单选题Questions 14～16 are based on the following interview about pop culture. You now have 15 seconds to read Questions 14～16.

单选题[此试题无题干]

单选题Each of my children ______ to a different school. [A] goes [B] go [C] have gone

单选题Questions 17—20 are based on the following passage. You now have 20 seconds to read Questions 17—20.

单选题It is evident that the author is NOT in favor of ______.

单选题 Questions 11 ～13 are based on the following talk about the euro. You now have 15 seconds to read Questions 11 ～13.

单选题Why does the love between Grudrun and Gerald experiences a process of tension and deterioration?