单项选择题

The new product that they show at the fair still needs improvement.

A. 新产品只要展出，就需要改进。
B. 展销会上他们展出的新产品需要进一步改进。
C. 他们在展销中推出了新产品，仍然需要不断进步。
D. 他们在展销会上推出的新产品仍需改进。
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单项选择题
We had better have our meals ______.
A. when our work is over
B. at the same time each day

C. when the meal is still hot
D. when we go back home
单项选择题
We have to develop good eating habits because ______.
A. we want to eat more
B. we want to enjoy our meals

C. we want to be healthy and strong
D. we want to save time
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