单项选择题

A. They were influenced by his background in engineering.
B. They were very expensive to take.
C. They were among the first taken under such conditions.
D. Most of them were of poor quality.
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单项选择题
A. Go fishing. B. Eat out. C. Go shopping. D. Buy fish.
A. Go fishing. B. Eat out. C. Go shopping. D. Buy fish.
单项选择题
A. If people had more time to learn how to do it. B. If its cost went down. C. If it could make buildings more attractive. D. If people realized its many advantages.
A. If people had more time to learn how to do it.
B. If its cost went down.
C. If it could make buildings more attractive.
D. If people realized its many advantages.
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