题目内容

在《架空输电线路无人直升机巡检系统》中,无人直升机巡检系统的导航定位偏差水平方向不大于()

A. 1
B. 2
C. 3
D. 4

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After dinner, he often listens to music and __________ books.

A. see
B. watches
C. reads
D. looks

Tony is not so clever as Judy, but he works ______than she

A. hard
B. harder
C. hardest
D. the hardest

The plane ______ when we got to the airport.

A. had taken off
B. has taken off
C. will take off
D. is taking off

China is not ________ it used to be

A. that
B. how
C. whether
D. what

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