Dear Sir,

I’m glad to recommend to you my student Li Ming.

Li Ming was born ____小题1:__ July 15,1974 in Xiamen. He studied in Datong Primary School from 1980. When he was in the m___小题2:__school, he did ___小题3:___ in maths, physics and chemistry and wasfond of art. After ___小题4:___(毕业) from No.6 High School, he entered Beijing University to s__小题5:____ physics. After four years of hard work there, he went to the United States for f__小题6:____ study. Because of his excellent work, he got a __小题7:_____(博士) degree in physics this year. He is now in good health and would __小题8:_____ to make contributions（贡献） to our country.

I should be most ___小题9:___(感激) if you would favorably consider my recommendation.

Looking forward to ___小题10:___ from you.

在抗震设防地区，建筑物场地的工程地质勘察内容，除提供常规的土层名称、分布、物理力学性质、地下水位等以外，尚提供分层土的剪切波速、场地覆盖层厚度、场地类别。根据上述内容，以下对场地的识别，何者是正确的
Ⅰ．分层土的剪切波速(单位为m/s)越小、说明土层越密实坚硬；
Ⅱ．覆盖层越薄，震害效应越大；
Ⅲ．场地类别为Ⅰ类，说明土层密实坚硬；
Ⅳ．场地类别为Ⅳ类，场地震害效应大

A．Ⅰ、Ⅱ
B．Ⅰ
C．Ⅲ、Ⅳ
D．Ⅱ