问题
选择题
下列说法错误的是 [ ]
A．可燃物达到着火点即可发生燃烧
B．爆炸不一定是化学变化引起的
C．煤矿的矿井里必须采取通风，严禁烟火等安全措施
D．在易燃易爆物的工作场所，严禁穿化纤类衣服
答案
答案：A
搜题请搜索小程序“爱下问搜题”
下列说法错误的是 [ ]
A．可燃物达到着火点即可发生燃烧
B．爆炸不一定是化学变化引起的
C．煤矿的矿井里必须采取通风，严禁烟火等安全措施
D．在易燃易爆物的工作场所，严禁穿化纤类衣服
答案：A
| 补全对话：选择方框内适当的选项填入短文空白处(有一项是多余的)。 | |
| A: What are you doing? B: 1 A: Great! Can you tell me something about the book? B: Certainly! It sa  ys 1,000 years ago, the world's population was very small. 2  A: Really? B: Yes, but during the last three or four hundred years, the world's population has grown very quickly. Today, it is growing faster than ever before. 3 A: Sorry, I don't know. B: It's more than 6 billion. A: It's so big. 4 B: Yes. If we don't control the population, there will not be enough space even to stand in on the earth in 600 years. A: 5
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