大环内酯类抗生素为（）。 A.厌氧菌感染的治疗药 B.大肠杆菌感染的治疗药 C.绿脓

阅读理解。

     I Get to Sew and Cook at School.

     Walk into my school, and you will smell food cooking, this is the class where we learn how to sew

and cook.

     In the sewing class, we first learn simple things, like the parts of the sewing machine and how to sew

with a needle. For the first sewing project we made a simple bag, To make the bag ,we had to learn to

use the sewing machine.

     Projects are easy in Grades 6 and 7, but become harder and harder gradually. In Grade 8,we have

to use what we've learned in Grades 6 and 7 (and maybe some new things, too) to put together an even

more difficult project.

     The cooking part is usually our favorite. We learn about the ingredients(原料),like flour and baking

soda (发酵粉),and what they are used for. The teacher tells us how to use them. Then, we learn how to

measure (估量) ingredients. But, sometimes, we have to guess the right measurements with our own eyes.

     There are many groups in the cooking class. Each group has a small kitchen to work in. We use the

equipment(设备)in the kitchen to make all kinds of food. Some of the food smells good and tastes

delicious. Other food made by the students is too terrible to eat!

     Later, we need to wash and dry dishes and clean up the kitchen. It is our duty. After all, it's not all fun!

1. In which class do we use needle?

A. English.  

B. Sewing class.    

C. Cooking class.    

D. Math.

2. We learned to use the sewing machine for the ______.

A. needle    

B. class          

C. simple bag      

D. project

3. Projects are hardest in Grade ______.

A. 6        

B. 7              

C. 6 and 7          

D. 8

4. Who tells us how to use flour and baking soda?

A. Father.    

B. Mother.        

C. The teacher.      

D. Classmates.

5. What should we do after cooking?

A. Play games.                  

B. Clean up the kitchen.  

C. Wash and dry dishes.            

D. B and C.

Bell现象常见于如下哪种疾病（）

A.特发性面神经麻痹

B.急性脊髓炎

C.病毒性脑炎

D.三叉神经痛

E.周期性瘫痪

所谓电子邮件是指利用 【6】 传递的邮件。

下列各项不属于行政征收的是( )。

A．某环保局向某企业收取排污费
B．乡工商所向经营者收取市场管理费
C．县林业局收取的林地使用费
D．电话费

当空气中被测组分浓度（）或使用的分析方法（）较高时，可采用（）。