问题
单项选择题
反应注水中断，则循环氢中NH3浓度（）。
A、上升
B、下降
C、不变
D、以上都不是
答案
参考答案：A
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反应注水中断，则循环氢中NH3浓度（）。
A、上升
B、下降
C、不变
D、以上都不是
参考答案：A
| 根据对话内容，从方框内选择合适的句子补全对话。 | |
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| A: Can I ask you some questions, Lisa? B: Sure. A: (1)_________ B: Yes, I have. But only once last term. A: (2)_________ B: I stayed up watching the football match the evening before, so I overslept the next morning. A: What did you do after you got up? B: (3)_________ But unfortunately, by the time I got there, the bus had already left. A: Poor guy! And then? B: So I started walking. Luckily, my uncle drove by and gave me a ride. A: But you didn't make it in the end, did you? B: No, I didn't. (4)_________ A: What did your teacher say? B: (5)_________ A: Yes, he is right. Thanks for your answering. B: It's my pleasure. |