下列各组中的两种有机物不属于同分异构体的是 A．葡萄糖与果_爱下问搜题

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问题选择题

下列各组中的两种有机物不属于同分异构体的是

A．葡萄糖与果糖　　　　　　　　　　　

B．CH₃CH₂COOH和CH₃COOCH₃

C．和

D．淀粉和纤维素

答案

答案：D

选择题

Yesterday we went to visit the farm ____ my father used to work for nearly ten years.

A. in which
B. that
C. where
D. which

选择题

There is _______ “u” and _______ “s” in the word “use”.

A．a; a

B．a; an

C．an; an

D．an;a