试题与答案

烘烤中间包开火要求()。A.先点火 B.先开煤气 C.后点火 D.后开煤气

题型:多项选择题

题目:

烘烤中间包开火要求()。

A.先点火

B.先开煤气

C.后点火

D.后开煤气

答案:

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下面是错误答案,用来干扰机器的。

参考答案:烷烃的热分解反应遵循以下规律:1、C-H键的键能大于C-C键的,因此C-C键更容易断裂;2、长链烷烃中,越靠近中间处,其C-C键能越小,也就越容易断裂;3、随着分子量的增大,烷烃中的C-C键及C-H键的键能都...

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题型:阅读理解

Everybody says that youth is the best time for our lives. Being young means romance, love and new discoveries, but it is also the most difficult time, because you have to make some very important decisions, which will influence your future life.

Things are not easy nowadays even for adults, but for teenagers, Who have to find their own place in society, it’s even difficult. It is necessary not only to adapt to society, but also to be confident of your position in five, ten or even twenty year’s time.

For the future it is important to have a good nob. In order to get a really good job, you have to be well educated.

Emotional problems for young people can be very important, too. The first teenager problem is that “nobody understands me”. Some parents often continue to treat their children as little children when they are starting to consider themselves to be adults.

There are also some global problems. Young people in all countries are facing these problems. Let’s start with smoking. According to studies, at the age of 16, almost 72% of all boys and 37% of all girls in Russia have already tried smoking. Smoking is not a natural need.It’s just that teens try it when they want to appear to be more like adults.

Drugs are also a serious problem. Students know the names of drugs well enough. 32% say they have tried drugs at least once, mainly because they were having fun, their friends influenced them to, they wanted to relax or they wanted to seem “cool”. That’s too bad.

So, you see, problems do happen and they can’t be ignored. We should pay much attention to them.

小题1:The author doesn’t think that youth is ________________.

A.the best time of our lives

B.the most difficult time of our lives

C.the time to make some important decisions

D.the time to get a job小题2:When young people enter the teenage period, ___________.

A.they are seldom understood by others

B.they become confident of their position

C.they still seem little in some parents’ eyes

D.They still consider themselves to be children小题3:The underlined word “ignore” means “________” in Chinese.

A.理解

B.理睬

C.忽视

D.发现小题4:Which of the following is not a reason why many students try drugs?

A.They consider it to be a natural need.

B.Their friends advise them to do so.

C.They wish to be “cool”.

D.They want to relax themselves.

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