题目

Thank you for sending us ____ fresh vegetables of many kinds. You have done us ____ a great service. A、不填；a    B、the；a       C、不填；不填       D、the；不填 答案：A 解析: 考查冠词的用法。第一空表示泛指，而第二空构成一个短语do sb. a great service，其意思为“给某人提供好的服务”。Service在这里为抽象名词具体化。根据短文内容，从下面方框中选择适当的短语填空，使短文内容完整正确。Since last winter, the smog has occurred a lot of times in China. It has done great harm to our daily life. Many traffic accidents happened just  小题1: the heavy smog weather. Many coaches and planes had to be  小题2:. In Nanjing, all primary and middle schools and kindergarten classes  小题3:  as heavy smog hit the city. People have realized  小题4:protecting the environment. People all over the country are taking measures to reduce the smog weather. The government suggests people go to work or school  小题5:, such as the bus and the underground. Also we should plant more trees.