下列实验操作中，不正确的是（） A．给试管里的液体加热，液体体积不超过试管容积的
题型：选择题
问题：
下列实验操作中，不正确的是（ ）
A．给试管里的液体加热，液体体积不超过试管容积的1/3
B．用胶头滴管滴加液体时，滴管下端应紧贴试管内壁
C．将盛有液体的蒸发皿，直接放在铁架台的铁圈上加热
D．用灯帽盖灭酒精灯，停止加热
题型：选择题
| 瞧这一家子，他们都喜欢吃什么?请根据他们的自述选出后面问题的正确答案。 | ||||||
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| 1. Does Maria like broccoli? A.Yes, she does. B. No, she doesn't. C.Yes, I do. D. I don't know. 2. What does Bill have for dinner? A. Salad and chicken. B. Ice cream. C. Tomatoes and chicken. D. Hamburgers and oranges. 3. _________ eats two eggs and a banana for breakfast. A. Maria B. Bill C. Bob D. No one 4._________ likes ice cream, but _________ doesn't like it. A. Bob, Maria B. Bill, Bob C. Maria, Bill D. Bob, Bill 5. Does Bill have eggs or bananas for breakfast? A.Yes, he does. B. No, he doesn't. C. He doesn't eat eggs or bananas. D. We don't know. |
