Smoking and Cancer
1．吸烟对健康有害。
2．吸烟易患癌症。
3．世界各国政府应采取严厉措施限制吸烟。
    Smoking is harmful to the health of people . It not oilly pollutes air，brings  about sufferings of other people such as children and nonsmokers，but also causes diseases of
bronchitis，lung cancer，chest cancer and throat catcer．

Heavy Traffic
1．近年来，许多城市都面临交通拥挤这一问题。
2．解决的一个办法是修建更多的道路。
3．我的意见。
        In recent years ninny cities are faced with the problem of heavy traffic. People have to waste more time on their way home or to work and even might be involved in an acci dent. With the development of industry and population expa