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[主观题]

In total darkness, doves ______.A．use landmarksB．don't know which way to flyC．fly back hom

In total darkness, doves ______.

A．use landmarks

B．don't know which way to fly

C．fly back home

D．wait for the stars to appear

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发布时间：2020-07-23

更多“In total darkness, doves ______.A．use landmarksB．don't know which way to flyC．fly back hom”相关的问题

第1题

The giant squid swimming in total darkness detects prey using ___________.

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第2题

This is a summer village mainly, and it is unusual to see lights in thehouses after the fa

This is a summer village mainly, and it is unusual to see lights in the

houses after the fall has come and gone. But in this winter weekend, per 【M1】______

haps because the new snow, people have come back, and the windows of 【M2】______

the houses beam. ! am accustomed to walk the length of the street after 【M3】______

dinner in near total darkness, so it makes up for a happy surprise, this 【M4】______

sudden brightening. In the dead black cold of night, the windows seem to

shiver at gold and amber-strong and beautiful assertions of the light. 【M5】______

Did I mention that is a Valentine'？.

Of course, I really could be somewhere, at any time. ! could be a 【M6】______

traveler in 19th century Russia, for instance, tromp from village to village 【M7】______

in some unspecified romantic errand, crushing the thick-caked snow under 【M8】______

my boots and taking courage to the lights of the candles in the cottages, if 【M9】______

you catch my drift. Winter lights have much the same as power the world 【M10】______

over.

【M1】

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第3题

听力原文：The Antarctic is probably the most difficult place on earth for human beings to s

听力原文： The Antarctic is probably the most difficult place on earth for human beings to survive. For six months of the year there is total darkness, and temperatures may fall as law as -88~C. Even in the summer months the temperature is often below zero.

The first successful expedition to the South Pole was led by Ronald Amundsen. His team used dogs and sledges to cress the frozen continent, and reached the pole in December 1911. in 1928, Richard Byrd decided to lead an expedition to the Antarctic to explore the unknown area from the air for the first time. It was the largest and best equipped expedition that had ever set out for the Antarctic. Byrd and his team established a base which they called Little America on the coast of the Rosa Sea. In November 1929, during the Antarctic spring, Byrd and three colleagues flew from the Little America base to the South Pole and back in 19 hours.

Byrd's major achievement was to introduce the use of aircraft ,radio and other devices in polar exploration. He did not agree with Ronald Amundsen that the airplanes would one day replace dogs and sledges; he believed that modern techniques were only an addition to the traditional methods of exploration. All of his expeditions, therefore, carded dogs and sledges, and people to look after them. This proved very efficient, and Byrd was able to achieve results of great scientific value.

What is the lowest temperature in the Antarctic？

A．-50℃.

B．-68℃.

C．-70℃.

D．-88℃.

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第4题

Bats are the only mammals that can fly, but vampire bats have an even more interesting dis

tinction—they are the only mammals that feed entirely on blood. These notorious bats sleep during the day in total darkness, suspended upside down from the roofs of caves. They typically gather in groups of about 100 bats, but sometimes they live in groups of 1000 or more. In one year, a 100-bat group can drink the blood of 25 cows. During the darkest part of the night, common vampire bats start to hunt. Sleeping cattle and horses are their usual victims, but they have been known to feed on humans blood as well. The bats drink their victims blood for about 30 minutes. They dont remove enough blood to harm their victims lives, but their bites can cause nasty infections and disease. Vampire bats strike their victims from the ground. They land near their prey and approach it on all fours. The bats have few teeth because of their liquid diet, but those they have are razor sharp. Each bat has a heat sensor on its nose that points it towards a spot where warm blood is flowing just beneath its victims skin. After putting the bite on an animal, the vampire bat laps up the flowing blood with its tongue. Its saliva(唾液)prevents the blood from forming masses. Young vampire bats feed not on blood but on milk. They cling tightly to their mothers, even in flight, and consume nothing but their milk for about three months. The common vampire bats are found in the tropics of Mexico, Central America, and South America.

The underlined word "consume" in Paragraph 5 probably means_____.

A．to drink

B．to destroy

C．to use

D．to fill

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第5题

5、

A.laziness

B.happiness

C.loneliness

D.darkness