单项选择题

Light rays are turned aside by the intense gravitational field surrounding a black hole().

A. heightened
B. deflected
C. rotated
D. created

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单项选择题
There is been competition between the two Motor car firms.()

A. cooperation
B. contest
C. dispute
D. conference
单项选择题
Tom dropped off in front of fire. ()

A. drop at
B. drop away
C. doze off
D. take off
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