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问题 单项选择题

已知溶液中蛋白质的百分含量为25%，你估算该溶液中氮的百分含量应为

A．2%

B．4%

C．6%

D．8%

E．10%

答案

参考答案：B

写作题

为了解同学们的理想，我们在学校的l00名学生中进行了一次调查采访。采访主要是围绕“What do you want to be when you grow up?”和“Why?”这两个问题进行的，请你根据以下调查数据写—份以“the dream jobs”为主题的报告．并谈谈你自己的理想与原因。词数80个左右。(报告开头语已给出．不计人作文总词数。)

The Dream Jobs

In order to help us form good ideals (理想), we made a survey among 100 students in our school. Here are the results.                                          

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              
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问答题 简答题

[计算题]某管线为φ89×5mm，长度为100m，试求体积为多少？
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