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【简答题】
We all know the dangers of fires. It’s good and necessary for a family to learn how to prepare for a fire. Here are some suggestions. Put a smoke alarm(火警) in the house. Smoke from a fire causes the alarm to go off. The alarm makes a loud sound. The sound tells everyone to leave the house at once. Make escape plans. We should know all the ways out of the house. If there is a fire, everyone follows the plan to get out. Part of the plan is to check all the windows to make sure they can be opened easily. Buy fire extinguishers(灭火器) in the house. Everyone in the family should know how to use them. Practise for a fire. We do fire practice because we teach children about fire safety. Everyone in the family should know the following fire rules: ★Don’t open a hot door! The fire can grow more quickly if you open the door. ★Stay close to the floor! Smoke can be more dangerous than fire. The best air is near the floor because smoke rises. ★What will you do if your hair or clothes start to burn? First, stop! Don’t run! The fire burns faster because of more air. Drop! Fall to the floor. Then roll! Turning over and over will make the fire go out. Put a blanket(毯子) around you to keep air away from the fire that may still be on you. There are many possible causes for fires. A wise family is ready all the time. If there is a fire, don’t forget to call 119 for help. 小题1:When a smoke alarm rings at home, it means _________. A.you have to get up B.water is running to the floor C.something is burning D.someone breaks your window 小题2:The writer advises us to do the following to prepare for a fire except that _____. A.we practise for a fire B.we make escape plans C.we buy fire extinguishers D.we use electrical cookers 小题3:When a fire happens,____ if you open the hot door. A.the door will soon be on fire B.the electricity will be cut off C.the fire will grow more quickly D.the house will fall down 小题4:What are the right steps you should take when your hair or clothes catch fire? A.Stop, run, roll. B.Stop, drop, roll. C.Run, drop, roll. D.Roll, drop, stop. 小题5:What is the best title for this passage? A.Be Ready for a Fire. B.The Causes of a Fire. C.Learn to Use a Fire Extinguisher. D.The Dangers of a Fire.
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【简答题】“”首先在( )地区得以实践。
【单选题】“一国两制”首先在( )地区得以实践。
A.
台湾
B.
香港
C.
澳门
D.
西藏
【单选题】_( ) hist o rical
A.
s o lid
B.
ign ore
C.
b ore
D.
s our ce
【简答题】hist_ry
【单选题】如何用hist函数获得落在每个区间的样本个数呢?
A.
num = hist(s,t)
B.
num = hist(t,s)
【单选题】hist()编码可以用来:
A.
绘制数据的Q-Q图
B.
查看数据分布直方图
C.
计算峰度和偏度
D.
绘制散点图
【单选题】下列有关引发每(又称引物酶)的论述,哪一项是正确的
A.
引发酶可以单独催化引物合成
B.
引发酶需要引发前体护送才能催化引物合成
C.
引发酶的底物是dNMP
D.
引发酶的底物是dNTP
【简答题】旅行社产品设计的质量管理包括哪些方面?
【单选题】单选:“一国两制”首先在( )地区得以实践。
A.
台湾
B.
香港
C.
澳门
D.
西藏
【单选题】history/ ‘histəri/
A.
n.(小山)山腰,山坡
B.
n.历史;个人经历
C.
vi.相符合;相当
D.
vt.犯(错误);干(坏事)