问题
单项选择题
| 综合安全技术 |
目前，一般采用直径为( )mm的爆炸管或球形爆炸容器。
A．20
B．50
C．70
D．80
答案
参考答案：B
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| 综合安全技术 |
目前，一般采用直径为( )mm的爆炸管或球形爆炸容器。
A．20
B．50
C．70
D．80
参考答案：B
| 阅读理解，填表。 | ||||||||||
| On September 12 this year, you will see a full moon (满月). It is the Mid-Autumn Festival (中秋节). The festival is on the 15th day of the eighth lunar (农历) month. And it is one of the most important festivals in China. It is a big time for families and friends to get together. In the evening, people sit around a table and look at the bright moon. They eat sweet or salty moon cakes (月饼). People can see a lot of lanterns (灯笼) in the street. Children like guessing (猜) the answers to the lantern riddles (灯谜). The Mid-Autumn Festival is also a harvest (收获) festival. Farmers begin to harvest fruits and vegetable. | ||||||||||
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