——Is there any possible way to help them get rid of such a bad habit?
——To tell the truth, it’s very hard. But we_______ on this problem.
A. worked B. had worked C. are working D. had been working
Help others whenever you can _______ you will earn respect from others without difficulty.
A. and B. or C. unless D. but
The Internet celebrated its birthday on September 2nd, by which time 40 years _______ since the first successful transfer of data between two computers.
A. has passed B. had passed C. passed D. have passed
—— I haven’t seen Johnson these days.
—— I think she _______ a conference in Beijing, but I’m not sure.
A. should be attending B. might be attending
C. could have attended D. must have attended
The use of Chinese by teachers in ______ English classroom must be restricted because it will decrease _______ time when students are exposed to the English language.
A. the; / B. an; / C. /; the D. an; the
SECTION C
Directions：Write an English composition according to the instructions given below in Chinese．
近几年中小学生近视人数大幅增加，据报道多达30%—50%的中小学生戴眼镜，而且这一数字还在呈上升趋势。保护视力必须得到广泛重视。
你作为一名学生，请根据自身体会用英语写一篇有关保护视力的短文。词数120词左右，短文的标题和开头已经给出。内容要点如下：
1、综述中小学生的视力现状。
2、分析造成学生近视 (short-sightedness) 的主要原因。
3、介绍视力保护的简便方法。(至少2个方法)
