阅读理解。
We recycle (回收利用) rubbish, so why not language? Recycling language means using vocabulary
that you have learnt before again and again. However, unlike rubbish that piles up (堆积) in our
environment, if we do not recycle language, we simply forget it. So how do you recycle language?
There are basically three ways to do it. The first is through reading. Go back to your favourite articles
and read them once more. Just reread them and do not worry about each vocabulary item. If there are
some that you are not sure about, make a guess and you will probably guess right. The second way to
recycle is through writing. Look at some of your favourite articles and write either a short paragraph or a
few sentences in your own words. After you have done this a few times, go back and read through what
you have written, checking vocabulary functions. Don't worry if you have made mistakes. That's how you
learn. The third way to recycle language is by having an imaginary chat with yourself about your favourite
articles at home. You can pretend there is someone with you who speaks English and tell him what you
are thinking about or how you feel.
1. According to the passage, recycling language means
A. repeating vocabulary at times
B. revising vocabulary at a proper time
C. learning new vocabulary as much as possible
D. using vocabulary that we have learnt very often
2. If we recycle language, it may _______.
A. be kept in our mind
B. be forgotten easily
C. pile up in our environment
D. disappear from our mind soon
3. The second way to recycle language tells us to _______.
A. rewrite our favourite articles
B. pay more attention to mistakes
C. practise spoken English with someone
D. pay no attention to vocabulary functions
4. Which of the following is NOT mentioned in recycling language?
A. Reading.
B. Listening.
C. Writing.
D. Speaking.
5. Which of the following is probably the best title of the passage?
A. Why to Recycle Language
B. How to Learn Vocabulary
C. How to Recycle Language
D. Why to Learn Vocabulary
、长为30m的细长透明体放在空气中，光从A端射入沿透明体传播到B端面。求光在透明体中从A端传播到B端所需时间的最小值和最大值。