在水泥熟料煅烧过程中，其中关键的阶段是（）。A、预热与分解 B、预热与烧成 C、分解

按实物工作量计算运输业劳动生产率时，需要掌握()和运输业从业人员平均人数的数据。

A.运输换算周转量

B.运输收入

C.运输业生产人员平均人数

D.多元经营收入

阅读理解。

     Because of my curiosity (好奇心), I had a really exciting weekend. I took a trip to Gloucester to see

some of the world's most beautiful animals-whales in the North Atlantic Ocean. After a long trip by train

and bus, we got on the ship called the "Privateer". On our way to see the whales on that beautiful sunny

day, I grew more and more excited.

     After a while we stopped, and everyone on the ship started to shout because we'd seen whales. It was

wonderful! 

     While we were watching the whales, a guide was giving us information about them. She told us we

were seeing only two kinds of whales-50-foot whales (singing whales) and 70-foot whales (the second

largest whales on the earth). She also said we could easily tell the different kinds of whales by their tales

(尾巴), since every whale has a different tail, just as people have different fingerprints (指纹).

     They all have names as well. On this trip, we saw "Salt" and "Pepper", two whales named by a scientist

and a fisherman. They swam together all the time. Sometimes whales came so close to the ship that we

thought we could touch them.

      I took twenty-seven photos, which was a really hard job because they moved so quickly, and stayed

on the surface of the ocean for such a short time. Having seen the whales was one of the chances few

people ever got. I was lucky enough to have that chance.

1. The passage is mainly about _____.[ ]

A. the different kinds of whales

B. the different kinds of animals in the ocean

C. a trip to study ocean animals

D. a trip to see whales

2. Which of the following transport did the author NOT use during the trip? [ ]

A. The train.

B. The plane.

C. The bus.

D. The ship.

3. We can learn from the third paragraph that _____. [ ]

A. there were only two kinds of whales

B. 70-foot whales are the largest in the world

C. whales all have different tails

D. whales have fingerprints as people do

4. What did the author do when she saw the whales? [ ]

A. She gave them the names "Salt" and "Pepper".

B. She swam with them.

C. She got close to touch them

D. She took photos of them.

氧化物按照是否与水生成盐，以及生成的盐的类型可分为（）

A、酸性氧化物

B、碱性氧化物

C、两性氧化物

D、不成盐氧化物

《中国药典》的内容一般分为凡例、（）、（）和索引四部分。