问题
单项选择题
石英砂岩碎屑组分中石英的体积分数（）。
A、<80％
B、为80％～90％
C、为90％～95％
D、>90％
答案
参考答案：D
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石英砂岩碎屑组分中石英的体积分数（）。
A、<80％
B、为80％～90％
C、为90％～95％
D、>90％
参考答案：D
 This week, I asked my classmates about their vacations. Here are some of their answers. Tina to New York City. The was sunny and the people friendly to her. She went there by and the bus trip was relaxing. The food was delicious. She had a vacation. Sally went to her uncle. Because the weather was windy and ,she had to stay at the house. She watched TV the TV shows were boring. She went shopping with her cousin but the shop assistants were . She had a terrible vacation. Tom stayed at home. At first he did his homework. It was a little difficult. Then he computer games. They were interesting. He thought his vacation was OK.
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