题目内容
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.
B. is afraid of hot weather
C. seems very tired at last
D. should fly less than 7000 metres
B. has a special body shape
C. stores much water in its body
D. has very light body weight
B. the bird has a very good sense of direction
C. there are still many who doubt the bird's ability
D. the bird has an inner compass
B. Birds and airplanes that can fly over a long distance.
C. Reasons for the bar-tailed godwit's long-distance flight.
D. An introduction to long-distance flights of birds and humans.
永乾教育寒假作业快乐假期延边人民出版社系列答案
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