问题
单项选择题
水体的污染源主要有()
A．以下都错误
B．工业废水、生活污水、农业污水
C．物理性污水、化学性污水、生物性污水
D．冷却水、洗涤污水、化工污水
E．有机污水、无机污水、混合性污水
答案
参考答案：B
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水体的污染源主要有()
A．以下都错误
B．工业废水、生活污水、农业污水
C．物理性污水、化学性污水、生物性污水
D．冷却水、洗涤污水、化工污水
E．有机污水、无机污水、混合性污水
参考答案：B
补全对话阅读对话，从每题A. B. C.D四个选项中，选出一个最佳答案完成对话。（5分） A: Hi, Lin Tao! Could you tell me something about your new pen pal? B: His name is Richard. He is from Canada. But he is living with his parents in Han~hou now A: Uh-huh. B：He's 15 years old. A: B: Oh, he speaks English and French, and he is leaming Chinese now. A: Really? Many foreigners think Chinese is hard to learn. B: Yes, he does. But he works very hard at it.He has invited me to take a vacation in Hangzhou and he can leam Chinese from me by the time. A: B: Yes,I have.I will leave next week.
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