问题
选择题
下列变化属于化学变化的是 [ ]
① 蜡烛燃烧 ②汽油的挥发 ③湿衣服晾干 ④火药爆炸 ⑤铁铸成锅 ⑥铜器在潮湿空气中表面有铜绿生成 ⑦铜导电
A.①③⑤⑥⑦
B.①②④⑥
C.②③④⑤⑦
D.①④⑥
答案
答案:D
下列变化属于化学变化的是 [ ]
① 蜡烛燃烧 ②汽油的挥发 ③湿衣服晾干 ④火药爆炸 ⑤铁铸成锅 ⑥铜器在潮湿空气中表面有铜绿生成 ⑦铜导电
A.①③⑤⑥⑦
B.①②④⑥
C.②③④⑤⑦
D.①④⑥
答案:D
补全对话。 | |
Tony: 2. I am looking for the Wushu Club. My Wushu lesson is starting now. I'm late. Mr. Huo: Would you like to come along? I'm going there, too. Tony: Thank you. 3. Mr. Huo: 4. Tony: Yes, I love it very much. Mr. Huo: Very good. Tony, let's run to the Wushu class. I am late for the class, too. Tony: Really? 5. Mr. Huo: Yes. I'm the new teacher of the Wushu Club. |