题目内容

5月10日某船位于赤道上,上午观测太阳,则太阳的半圆方位的名称为

A. NW
B. NE
C. SW
D. SE

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当某颗恒星恰在测者头顶上时,其极距等于

A. 90°-测者纬度
B. 90°-天体赤经
C. 90°-天体高度
D. 90°-测者经度

Theresomething wrong with our new printer. It broke down twice in the past week.

A. could be
B. must be
C. is
D. are

There to be any problem with the office rule. Everyone agrees to it.

A. doesn’t seem
B. don’t seem
C. seems
D. seem

There isfinding his office. It's just next to the elevator.

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B. no difficulty
C. much difficulty
D. many difficulties