男性，24岁，发现高血压病两年收缩压在180～230mmHg，舒张压≥130mmHg

Mr. Lewis was a dance teacher. He was a nice man and always had a lot of students. One year he moved to a new town, and was soon teaching many students in the dance school there, but he decided to move again to a big city. He would have more work there.

When one of his students heard that he was going to leave, she said to him, “The new teacher won’t be as good as you are.” Mr. Lewis was happy when he heard this, but he said, “Oh no. I’m sure he’ll be as good as I am ---- or even better.”

The student said, “No. Including you, five teachers have come and gone while I’ve been here, and each new one was worse than the last.”

1. ______ came to learn dancing from Mr. Lewis.

A. A few students  B. Few students  C. Many students  D. No students

2. Mr. Lewis wanted to move a big city because _______

A.   he hated the small town

B.   he couldn’t make a living in the small town

C.   it would be easy for him to have more work in the city

D.  it made him spend more money in the town

3. The student thought that _______

A.   Mr. Lewis was a good teacher     B. Mr. Lewis was the best teacher

C. Mr. Lewis was worse than the last

D. Mr. Lewis would be worse than the last

4. Before Mr. Lewis ______ teachers came to the town to teach dancing

A. three          B. four           C. five           D. six

5. From the story we can conclude（推论） that the student wished _____

A. to have a better teacher            B. to have a worse teacher

C. to become a dance teacher          D. to see the sixth teacher

采样必须在无菌操作下进行，采样工具在使用之前，应湿热灭菌，也可以干热灭菌，还可以用消毒剂消毒进行处理。

目前我国居民生活用的燃气最常见的有（）

A.天然气

B.人工煤气

C.液化石油气

D.石油气

手工绷网是一种简单的传统绷网方式，通常适用于（）。

A、铝合金网框

B、铁制网框

C、钢制网框

D、木质网框