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问题 单项选择题

大豆种子萌发过程，会发生下列生理活动中的（）①基因的选择表达②丙酮酸的分解③同源染色体联会配对④蛋白质的水解和氨基酸的缩合⑤氧气的产生与消耗

A．①②③④⑤

B．①②③④

C．②③⑤

D．①②④

答案

参考答案：C

阅读理解

阅读短文，回答问题。

      Today is Sunday. Amy and her friends are in a village. The village is beautiful. There are many rivers and

bridges in the village. The water is clean. The air is fresh. There are many mountains near the village. They are

very happy.

1. What day is it today?

___________________________________________

2. Where are they?

___________________________________________

3. What are near the village?

___________________________________________

4. Is the air fresh?

___________________________________________
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解答题

袋子里装有红、白两种颜色的小球，质地、大小、形状一样，小明从中随机摸出一个球，然后放回，如果小明3次摸到红球，能否断定袋子里红球的数量比白球多？怎样做才能判断哪种颜色的球数量较多？
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