The first lighthouse used ______ to warn ships when they were near the harbor.
A. fire
B. oil light
C. electric lamps
查看答案
Why couldn't the girls answer correctly the teacher's question？
A. They couldn't remember which tire was flat.
B. There wasn't a flat tire.
C. All four tires were flat.
A．returnB．devoteC．leadD．proceed
A. return
B. devote
C. lead
D. proceed
Everyday the man came back home very tired.
A. 真
B. False
According to the author, diversity is
A. confusing.
B. extraordinary.
C. quite common.
D. universal.
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