题目内容
A landing on Mars is within the _____ of current physical theory.
A. scheme B. scope C. scrap D. scale
B
解析:
scope 范围，活动范围，理解犯围: 1 Many words are outside the scope of this dictionary. (许多单词是超出了这本词典的范围.) 2 Very hard words are not within the scope of a child's understanding。(非常难懂的 词是超出了一个孩子的理解范围.) 3 Economics is beyond the scope of a child's mind.(经济学是孩子理解不了的.)
名校课堂系列答案The bar-tailed godwit （斑尾鷸）has just broken its own record for the world’s longest non-stop flight, including humans in planes, according to a report made by Lund University Press. The bird can fly non-stop for eight days, while the most impressive man-made airplane can only remain in the sky for 82 hours without a stop.
The bar-tailed godwit’s journey, from Alaska to New Zealand, covers over 6,835 miles. It completes this trip twice a year, in autumn going to New Zealand, and in spring back to Alaska. The tireless bird ends the trip without stopping once for food or rest. All other birds can only finish trips that are twice as short as what the bar-tailed godwit travels.
One reason for the bar-tailed godwit’s success is that it has made the best use of its fuel, which is only 0.41 percent of its body weight over each hour of any given long flight. Hedenstrom, a professor from Lund University, says, “This figure is extremely low compared with other birds.” The bird also has a special body shape that helps it fly easily. It stores body fat and protein to manage its trips. It also travels fast, compared to other birds and animals.
Many questions remain about this bird record holder that never gets lost in the air. Researchers wonder whether it has an inside compass (指南针) that helps it to know the direction. Please watch how beautiful bar-tailed godwits look as they come in for a landing, along with other birds.
1.For the flight from Alaska to New Zealand, the bar-tailed godwit__________
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A．doesn’t need to stop to eat |
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B．is afraid of hot weather |
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C．seems very tired at last |
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D．should fly less than 7,000 meters |
2.The main reason why the bar-tailed godwit can break the record is that it ______.
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A．eats little food every hour |
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B．has a special body shape |
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C．stores much water in its body |
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D．has very light body weight |
3.The last paragraph tells us that _________.
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A．researchers have understood the bird very well |
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B．the bird has a very good sense of direction |
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C．there are still many who doubt the bird’s ability |
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D．the bird has an inner compass |