土沟边坡必须平整、稳定，严禁贴坡。沟底应平顺、整齐，不得有松散土和其他杂物，排水要畅

下列对类病毒描述不正确的有

A．有包膜或衣壳

B．在细胞核内增殖

C．单链杆状RNA，有二级结构

D．仅由250～400个核苷酸组成

E．对热、有机溶剂敏感

阅读理解。

     Today is my first day at Merchiston Castle School, and I was really nervous about it, because I have never

visited the school before and didn't take any summer course. Despite my anxiety, I soon relaxed once I arrived;

the staff were so nice that I felt my spoken English was better than it actually was! As soon as I walked into

the dayroom of my boarding house, I was absolutely (完全地) amazed by the friendly atmosphere; everyone

was so friendly that a boy as shy as I had no difficulty in setting in, and I made many new friends on my very

first day, although I was struggling to remember all the names.

     Also I realized there were other international students in the house from all over the world, such as South

Korea, Japan and Russia. Although their English was not so fluent, it didn't take long for us to understand each

other at all. In some ways, it was even better to practice English by speaking to the international students,

because we were both learning.

     As a boarder, the quality of food is something I consider very important, and Merchiston has not let me

down. The school kitchens are run by a professional catering company, and the quality of food is excellent,

also they take the issue of a healthy diet really seriously. I remember once I was asked to take more salad for

my meal by a member of the kitchen staff for I did not have enough vegetables. This brings to another point

of being a boarder: you need to learn how to look after yourself and be responsible for yourself. One of the

huge advantages of being a boarder is that we can have breakfast in the school, which means we don't have

to pull ourselves out of the bed as early as the daypupils!

1. Why was the writer nervous when he was at Merchiston Castle School on the first day? [ ]

A. Because he had no friends and relatives there.

B. Because he didn't know the school well.

C. Because he was not good at English.

D. Because he was shy.

2. On the first day, _____.[ ]

A. though the writer was anxious,he soon relaxed

B. he found the dayroom of his boarding house terrible

C. he made many new friends,but he didn't remember any of their names

D. he thought he spoke English better than the staff in the school

3. Which of the following is WRONG according to the passage? [ ]

A. In the boarding house,there are only students from South Korea, Japan and Russia.

B. The international students in the boarding house don't speak Englsih very fluently.

C. The food in Merchiston doesn't make the writer disappiointed.

D. The professional catering company thinks the issue of a healthy diet is very important.

4. The underlined word "boarder" in the last paragraph means "_____". [ ]

A. a student who is from abroad

B. a student who lives at school

C. a student who is good at English

D. a student who used to be shy

什么是“见证点”？见证点的监理实施程序是什么？

是否以一定的价值判断为依据是实证分析法和规范分析法的根本区别。

溢流量的大小取决于（）。

A.压差大小

B.地层孔隙度

C.地层的渗透性

D.储量大小

E.地层流体性质