If we ______ our test tomorrow, I would have gone to the concert.
A. weren’t to have
B. hadn’t been to have
C. aren’t to have
D. hadn’t had
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Racial discrimination has still ______ in some parts of the U.S.A. since it after the Civil War.
A. been existed; has been done away
B. existed; has been done away with
C. been existed; has been done away with
D. existed; was done away with
The following day I ran nay first race at high ______.
A. latitude
B. altitude
C. longitude
D. attitude
—Who is he Is he our new teacher —I’m sorry. I don’t know ______ and ______ he is.
A. who; what
B. who; how
C. how; what
D. where; how
硝酸甘油对下列哪类血管几乎没有作用
A. 小动脉
B. 小静脉
C. 冠状动脉的输送血管
D. 冠状动脉的侧支血管
E. 冠状动脉的小阻力血管
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