关于中央性颌骨癌临床特点的叙述错误的是（） A.主要来自牙胚成釉上皮的剩余细胞 B.

– What a beautiful school!

– Yes. Many trees ___________ in our school every year.

A. plant                     

B. are planted             

C. were planted

关于肾上腺髓质激素的叙述，下列哪一项是错误的（）

A.肾上腺素和去甲肾上腺素都是肾上腺髓质激素

B.髓质激素的化学本质是类固醇

C.肾上腺素受体有α和β两大类

D.由嗜铬细胞分泌

E.肾上腺髓质激素的分泌与交感神经密切联系

阅读理解

     More and more people are coming under the umbrella of fatness in modern times. Not just adults, but

even children are getting overweight. Today some of the newborn babies are also born fat. It has been

proved that the people living in the developed Western countries are more likely to become overweight.

There are a number of causes behind this.

     The people in the developed countries including the United States almost enjoy all the comforts of life. Almost all the things in the lives of the people living in these countries are at their fingertips. A very limited

amount of movement and physical effort is required to do any kind of job. Because of the fact that these

countries are quite developed, most of the jobs that the people take up are desk jobs. So the lifestyle of

them is just around the office desk.

     Most of the developed Western countries are cold ones. Nature demands that people eat the food

that can somehow make them stand the coldness. Therefore, wine fatty dairy products, bread, junk food

and red meat become an important diet in these countries.

     However, the blame cannot be entirely put on the unhealthy eating habits of the people. Technology

allows them to import almost all the foods products that they do not grow. Although some healthy food

are grown in the countries nowadays, the quantity is very limited. It is not enough to meet the demand.

So when they are not available and fatty foods are cheaper, then people prefer to go for the eating habit

that they have always been following.

1. According to Paragraph 2, most people in the developed countries do________jobs.

A. physical      

B. management

C. desk    

D. tiring

2. According to the text the ________plays a key role in the fatness in the developed Western countries.

A. culture

B. gene(基因)

C. education

D. weather

3. The underlined word in Paragraph 4 refers to________.

A. the healthy foods

B. the people in the developed countries

C. the fatty foods

D. the unhealthy eating habits

4. The purpose of the author in writing the text is to________.

A. warn people of their bad eating habits in the developed countries

B. remind people of the relation between food and weight gain

C. inform people of the causes of weight gain in the developed countries

D. tell people that fatness in the developed countries is natural

5. People in the developed countries often________.

A. carry umbrellas with them

B. blame the fatness on the weather

C. grow a lot of healthy foods in their countries

D. eat to protect themselves from the cold

巷道断面设计的内容和步骤有那些？

公司定期组织召开（），点评评审单位工作质量。

A.评审协调会议

B.技经协调会议

C.设计协调会议

D.基建协调会议