问题
多选题
（多选题）下图是模拟煤的干馏的实验装置，下列有关叙述错误的是（ ）
A．如图示实验中没有化学反应
B．实验后水溶液的pH＞7，溶液Y是黑色粘稠的煤焦油，上层X是粗苯等
C．气体Z中有些成分易燃，且可以还原氧化铜
D．液体Y是一种纯净物
答案
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（多选题）下图是模拟煤的干馏的实验装置，下列有关叙述错误的是（ ）
A．如图示实验中没有化学反应
B．实验后水溶液的pH＞7，溶液Y是黑色粘稠的煤焦油，上层X是粗苯等
C．气体Z中有些成分易燃，且可以还原氧化铜
D．液体Y是一种纯净物
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| 从方框中选择恰当的句子补全对话。 A: We have lots of fruit in the fridge. Do you want to learn to make fruit salad, Alice? B: Of course, Mom. First I need to prepare the things, right? ____1____ A: Yes, we do. But only one cup. B: And how many apples do we need? A: Oh, ____2____ We need three apples. B: ____3____ A: We also need four bananas and two teaspoons of honey. B: All right. Now the things are on the table. ____4____ A: First, cut up the apples and bananas. Then put them into a bowl. Next put the yogurt and honey in it. Finally, ____5____ Now you can eat it. B: Wow! It looks really nice! Thanks, Mom!? | |
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