Air is composed of ______ gas including hydrogen oxygen and carbon dioxide.A.variedB.vari
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Air is composed of ______ gas including hydrogen, oxygen and carbon dioxide.
A.varied
B.variant
C.variable
D.various
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正确答案:D
解析:题型:语法题。本题的大意是空气是由氢气、氧气和二氧化碳等各种各样的气体组成的。题意为:空气由不同气体混合组成。varied:consisting of or including many different kinds of things or people,especially in a way that seems interesting. 各种各样的:具有或由许多种类和形式组成的。variant (n. adi);something that is slightly differentfrom the usual form. of something. 指同常规事物有些许差异的,变异的。variable:易变的:可能变化或改变的;服从变化的;可变的;反复无常的;无常的various指的是种类不同的,不一样的,各式各样的。
