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When filled with a gas______ lighter than air, a balloon becomes buoyant and ris
When filled with a gas______ lighter than air, a balloon becomes buoyant and ris
游客
2025-03-20
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问题
When filled with a gas______ lighter than air, a balloon becomes buoyant and rises.
选项
A、much
B、more
C、less
D、little
答案
A
解析
本题考查形容词比较级的用法,lighter本身已经是比较级的形式,修饰它的词只能是much或little,据题意,much合适。题意为,当充人比空气轻得多的一种气体时,气球变成能浮动的并且上升。
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