下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。
The Greatest Mystery of Whales
The whale is a mammal (哺乳动物) - warm-blooded, air-breathing, giving birth to its young alive, sucking them - and, like all mammals, originated on land. There are many signs of this. (1) front flippers (鳍肢), used for steering and stability, are traces of feet.
Immense strength is built 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 (2) has been estimated at 400 horsepower. One specimen was reported to have (3) a whaling vessel for seven hours at the (4) of eight knots.
An enraged whale will attack a ship. A famous (5) of this was the fate of whaler Essex, which was sunk (6) the coast of South America early in the last century. More recently, steel ships have had their plates buckled (扭曲变形)in the same way. Sperm whales were known to (7) the old-time whaleboats in their jaws and cru
A. it
B. he
C. she
D. there
下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。
The Greatest Mystery of Whales
The whale is a mammal (哺乳动物) - warm-blooded, air-breathing, giving birth to its young alive, sucking them - and, like all mammals, originated on land. There are many signs of this. (1) front flippers (鳍肢), used for steering and stability, are traces of feet.
Immense strength is built 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 (2) has been estimated at 400 horsepower. One specimen was reported to have (3) a whaling vessel for seven hours at the (4) of eight knots.
An enraged whale will attack a ship. A famous (5) of this was the fate of whaler Essex, which was sunk (6) the coast of South America early in the last century. More recently, steel ships have had their plates buckled (扭曲变形)in the same way. Sperm whales were known to (7) the old-time whaleboats in their jaws and cru
A. Their
B. It’s
C. Theirs
D. Its
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Freezing to Death for Beauty People in Beijing wear a lot of clothing during winter to fend(抵御) off the cold. In the United States, however, people wear {{U}} (51) {{/U}}, partly because the ear is the primary mode of transportation. Cars take {{U}} (52) {{/U}} straight to their workplaces, which are heated well. The American diet is full of calories, so their {{U}} (53) {{/U}} can afford to burn heat more quickly. Fewer layers of clothing give people the opportunity to stay {{U}} (54) {{/U}}. Lots of Yale girls wear skirts {{U}} (55) {{/U}}when it’s 10 degrees Centigrade(摄氏温度的) outside. Some of them at least wear boots, tights(裤袜), and leg-warmers(暖腿套). Some, however, really just go for(选 择) the look {{U}} (56) {{/U}}the risk of health. These girls h A. sacrifice B. devote C. suffer D. endure 我来回答: 提交
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