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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Why is aig mirror helpful?
A.
It gathers more light.
B.
It allows you to see bigger objects.
【单选题】What did ancient astronomers do?
A.
They looked for patterns in the stars and in time.
B.
They thought that the stars changed shape over the course of a year.
【单选题】There is an inherent problem with this type of car.
A.
unusual
B.
unavoidable
C.
annoying
【单选题】Successful companies are often led by great visionaries.
A.
people with a lot of money
B.
people with a lot of power
C.
people with a lot of imagination