“I was in centre school” “_____”
A.So were we
B.So we were
C.We were so
D.So did we
答案:A
—_____ you always question everything I say?
—Sorry if I make you unhappy; but it's my habit to question before I believe. [ ]
A. Shall
B. Will
C. Must
D. Can
通常彗星有两条尾巴,其中一条呈青色的彗尾成因为:()
A.由尘埃构成,成为尘埃尾
B.由带电离子构成,成为离子尾
C.由原子构成,称为原子尾
D.由尘埃构成,但称为电浆尾
E.由分子构成,称为分子尾