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问题 选择题
The princess's hat was really fancy, which ____ with gold and jewels.

A. decorated
B. decorates
C. was decorated
D. was decorating
答案

答案：C

填空题

根据句意和首字母填写单词。

1. Students often make spelling m_____ in their compositions.

2. Can you say a c_____ sentence?

3. The teacher is very p_____ to the students.

4. The boy r_____ to answer the question.

5. Tina is a(n) h_____ child. Trust her.

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单项选择题

勒纳指数是衡量市场绩效的重要指标之一，它度量的是价格与边际成本的偏离率。勒纳指数越大，表明（　）。

A．市场的竞争程度越高

B．市场的竞争程度越低

C．价格等于边际成本

D．市场集中度越低
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