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问题 单项选择题

根据TSGZF001—2006《安全阀安全技术监察规程》附录E的规定：对安全阀校验台上的压力表检定周期为（）。

A、1个月

B、3个月

C、6个月

D、12个月

答案

参考答案：C

写作题
书面表达。
     根据中文提示和英文书信内容，写一封意思连贯、符合逻辑、不少于60词的回信，信的开头和结
尾已给出，其词数不计入所完成的回信内。请不要写出你的校名和姓名。
     假设你叫李平，是美国中学生斯蒂文的笔友，你收到了他的来信。请给斯蒂文写一封回信。根据
中国人的性格特点和风俗习惯，告诉他在中国家庭居住时应注意些什么。 
Dear Li Ping,
     I'm going to China in September. I'll study in No.1 Middle School in Beijing for half a year.
And I'll live in a home of a Chinese student. I've never been to China and I know very little
about Chinese families. Can you tell me something about it so that I can get on well with them?
     I'm looking forward to hearing from you.
                                                                                                                         Yours,
                                                                                                                         Steven

Dear Steven,
     I'm glad to hear that you will come to China soon. _______________________________
___________________________________________________________________________
___________________________________________________________________________
Take it easy. I'm sure you will get on well with them.
                                                                                                                         Yours,
                                                                                                                         Li Ping
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解答题

学校买来100个小皮球和6个排球，共花去156元。每个排球的价格比20个小皮球的价格还多4元。一个小皮球和一个排球各多少元？
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