新概念英语第四册多项选择题5篇
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新概念英语第四册多项选择题篇一
Multiple choice questions 多项选择题
Choose the correct answers to the following questions.
Comprehension 理解
1，The two classes of flight depend on ______.
a.occasional movement and progress
b.wing span and gliding
c.gliding and muscle-power
d.wind currents and machinery
2，The albatross can keep flying for very long periods because it ______.
a.actively uses air movement to stay in the sky
b.it is a v ...