问题 多项选择题

关于脊髓的血液供应说法不正确的有()

A.根动脉是颈升动脉颈深动脉、肋间动脉、髂腰动脉、外侧骶动脉的分支

B.胸根动脉与腰根动脉连接处脊髓节段血液供应最好

C.脊髓前后动脉来自椎动脉的颅内部分

D.脊髓前动脉上胸部以上的血液来自椎动脉,血流向下;上胸部以下血流来自根动脉,血流向下

E.脊髓前动脉仅1根位于脊髓正前方,脊髓后动脉位于脊髓后外侧沟表面左右各1根

答案

参考答案:B, D

阅读理解

根据短文内容,判断下列句子的正误,正确的用“T”,错误的用“F”。(每小题1分,共5分)

There are many wetlands (湿地) in China and some of them have become the world's important wetlands.

The Chinese Yellow Sea Wetlands are among them. They are in Yancheng, Jiangsu Province. They are home for many different kinds of birds and animals. The world's largest Milu Deer Nature Reserve (自然保护区) is in them. More than 700 Milu deer live freely there. There are not many red-Crowned cranes in the world, but every winter you can see some in the red-Crowned Nature Reserve in the Yellow Sea Wetlands.

The temperature in the wetlands is usually neither too high nor too low. There is a lot of rain and sunshine, too. They are really good places for wildlife (野生动物). Offering food and home for some special kinds of animals and birds is not the only reason why we need to protect wetlands. Wetlands are important because they also prevent flood. But some people want to change the wetlands to make more space for farms and buildings. This means there will be less and less space for wildlife.

Luckily, more and more people are beginning to realize the importance of wetlands and wildlife. Every year, on February 2nd, many activities are held to tell people more about wetlands. 

小题1:The Chinese Yellow Sea Wetlands are in the west of China.

小题2:Usually the weather in the wetlands is pleasant.

小题3:February 2nd is the world's wetlands Day.

小题4:We must protect wetlands only because they can offer food to the animals and birds.

小题5:Wetlands are valuable resources of land on the earth. 

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