疔疮初起可用：（）A．生肌散 B．玉露散 C．九一丹 D．八二丹 E．白玉膏

阅读理解。

     This is No.12 High School. My friend Dongdong is in this school. Dongdong has long hair, a big nose, a small mouth and big eyes. He is thirteen. He is in Class Two, Grade Seven. He's a good student. He

has two good friends in his school. They are Jim and Jack. They're brothers(兄弟). They are fourteen.

They have small noses, small eyes, but they're very tall(高的). Jim, Jack and Dongdong are in the same

class. Mr. Lee is their(他们的) teacher. They are good friends.

1. Dongdong is in _____.

A. No.2 High School

B. Class 2, Grade 1

C. Class 2, Grade 7

D. Class 2, Grade 8

2. How old is Dongdong? He is _____.

A. fourteen

B. thirteen

C. twelve

D. eleven

3. Mr. Lee is _____.

A. Tiantian's brother

B. Tiantian's teacher

C. Dongdong's teacher

D. Jim's brother

4. Jim is _____.

A. an English boy

B. an English teacher

C. a Chinese boy

D. Sorry, I don't know

5. Who has big eyes?

A. Jim.

B. Dongdong.

C. Tiantian.

D. Jack.

采用天然矿石如石英砂、石灰石等，配以其他化工原料如纯碱、硼酸等粉状玻璃原料，在熔炉内经高温熔化，然后借助离心力及火焰喷吹的双重作用，使熔融玻璃液纤维化，形成的棉状材料是（）。

A.矿渣棉

B.玻璃棉

C.岩棉

D.膨胀珍珠岩

细胞之间以桥粒相连接的是（）

A.外釉上皮层

B.内釉上皮层

C.星网状层

D.中间层

E.釉结

铁路货物运费的计算过程中能用的是（）。

A.计算运费

B.运行基价

C.计费重量

D.运行里程

商用驾驶执照有具体的作废日期吗（）

A、没有，领发时没有作废日期

B、有，在发出的当月后的第24个月月底

C、没有，但如果没12个月中的飞行检查完成的不好，刚商业飞行权利作废