诊断心律失常最常规的无创检查是（） A.心电图 B.心电向量图 C.心音图

高度每增加1公里，气温大约降低8℃，现在地面气温是12℃，那么4公里高空的温度是________．

阅读理解。

     Mr Brown was an old man. He lived in a small village with high mountains all around it. He had never

been to a city before.

     Last summer his son came back, and took him to the city. He stayed there for about two months. When

he came back, his wife asked him, "Do you like living in the city? Did you have a good time?"

     "No, I don't like living in the city because the buildings are too tall. And the noise is too loud. The bed is

too soft. And they never have meals outside the house," answered Mr brown. "I'm very angry because the

people in the city aren't kind to the animals."

     "How do you know this?" asked his wife.

     "One Sunday morning Jack, our son took me to a place. There are a lot of animals in that place-tigers,

elephants, lions and monkeys. But they are shut (关) in the cages. The place is the prison (监狱) of the

animals." Answered Mr Brown..

1. Mr and Mrs Brown were ______.[ ]

A. doctors

B. teachers

C. zookeepers

D. farmers

2. When Mr Brown saw the animals were shut in the cages he felt ______.[ ]

A. satisfied (满意的)

B. angry

C. happy

D. surprised

3. He didn't like ______. [ ]

A. the mountains

B. the animals in the cages

C. the city

D. his village.

4. The animals in Mr Brown's village ______. [ ]

A. are free

B. are in the cages

C. are sent to the city

D. are in prison

5. Mr Brown did not know the place with a lot of animals was a ______. [ ]

A. park

B. garden

C. village

D. zoo

在反应：Fe₂O₃+2Al

高温  .

 Al₂O₃+2Fe 中，______元素的化合价升高，该元素的原子______电子，被______；______元素的化合价降低，该元素的原子______电子，被______；该反应中，______是氧化剂，______是氧化产物．

采用聚乙烯醇磷酸铵吸收亚甲基蓝比色法测定空气中硫化氢时，由于硫化镉在光照下易被氧化，所以

A.加入显色剂后应避光 

B.采样前应避光 

C.样品分析之后应避光 

D.样品分析之前应避光 

E.显色剂应避光 

《中国药典》从哪一年版起设为三部（）

A.1990年版

B.1995年版

C.2000年版

D.2005年版

E.2010年版