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阅读理解。 Every 30 seconds there is an earthquake. But don't worry because most are so weak that they cannot be felt. Only a few big ones hurt people. Here are some tips on how to stay safely in an earthquake. If you are indoors during an earthquake, hide under a desk. Stay away from windows and anything that could fall on you. If you are outdoors, move to a clear place. Try to be away from trees, signs, buildings and streetlights. These could fall on you. If you are in a shop and far from the door, don't try to run to outside and rush for exits (出口). Everyone will be doing that and you'll find it hard getting out. Don't get into a lift during an earthquake. Just hide under some strong covers near you. When an earthquake has ended, be careful because after-shocks may still happen. These are just as dangerous as the earthquake itself. So stay under the desk until you make sure it's safe to get up. If you are at home and you smell gas, open the windows and get out of the building as quickly as you can. A gas line in your house may be broken. This could be very dangerous. 1. Most earthquakes are too _____ to hurt people. A. strong B. weak C. dangerous 2. If you are outdoors, it would be safe to _____. A. go to a playground B. stay under a tree C. stand by the window 3. If you're in a shop and far from the door, you'd better _____. A. rush to the door right away B. hide under some strong covers near you C. rush to a lift to get down 4. This passage tells us _____. A. how dangerous the earthquake is B. how to be safe in an earthquake C. how does the earthquake come into being 5. Which is NOT true? A. Don't get into a lift during an earthquake. Just hide under some strong covers near you. B. If you are at home and you smell gas, open the windows and get out of the building. C. If you are indoors during an earthquake, standing at the windows is safe.
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参考答案:
举一反三
【单选题】具有调补阴阳作用的药膳是()
A.
胡桃粥
B.
莲枣淮山粥
C.
黄芪炖乌骨鸡
D.
人参羊肉片
【单选题】下列不属于亲电加成反应的是
A.
烯烃与高锰酸钾的反应
B.
烯烃的硼氢化反应
C.
乙炔在氯化亚铜及氯化铵的催化下,与氢氰酸反应生成丙烯腈
D.
乙炔与氯化氢反应生成二氯乙烷
【单选题】运行G28指令,机床将( )。
A.
返回参考点
B.
快速定位
C.
进行直线加工
D.
坐标系偏移
【单选题】以下动物病毒体积最大、结构最复杂的是
A.
猪瘟病毒
B.
狂犬病病毒
C.
痘病毒
D.
口蹄疫病毒
【单选题】下列不属于炔烃加成反应的是()?
A.
催化加氢
B.
催化加氧
C.
加卤素
D.
加水
【多选题】设备物理寿命的长短主要取决于( )。
A.
使用强度
B.
设备质量
C.
维修水平
D.
技术进步速度
【单选题】运行G28指令,机床将( )。
A.
返回参考点
B.
快速运动
C.
作直线运动
D.
坐标系偏移
【单选题】下列反应属于亲核加成反应的是( )
A.
醛与氢氰酸反应生成α-羟基腈
B.
炔烃与溴反应生成邻二溴代烯烃
C.
炔烃经催化氢化生成烷烃
D.
环己烷与溴反应生成溴代环己烷
【单选题】下列化合物与炔烃的反应中,属于亲核加成的是
A.
B.
HCl
C.
卤素
D.
甲醇
【单选题】运行G28指令,机床将( )。
A.
坐标系偏移
B.
快速定位
C.
做直线加工
D.
返回参考点
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