胶质的H／C原子比同沥青质相比是（）。 A.高 B.低 C.稍低 D.相等

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问题单项选择题

胶质的H／C原子比同沥青质相比是（）。

A.高

B.低

C.稍低

D.相等

答案

参考答案：A

单项选择题

把下面六个图形分为两类，使每一类图形都有各自的共同特征或规律，分类正确的一项是（）

A．①④⑤ ②③⑥

B．①③⑤ ②④⑥

C．①⑤⑥ ②③④

D．①②⑤ ③④⑥

单项选择题

Speaker. A: I'm not ever going to that shop near school. They overcharge me every time. Speaker B:______

A．How much do they overcharge you every time

B．You must be mistaken. They provide good service.

C．Me neither. I stopped going there a long time ago.

D．That shop is the closest one to our school.