问题 单项选择题 A1/A2型题

甲硫氧嘧啶的作用机制是()

A.抑制促甲状腺释放激素的分泌

B.抑制甲状腺激素的生物合成

C.直接损害甲状腺组织

D.抑制甲状腺摄碘

E.抑制甲状腺激素的释放

答案

参考答案:B

解析:硫脲类药物主要抑制甲状腺内的过氧化物酶,从而抑制甲状腺激素的生物合成。

阅读理解

根据短文内容,从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

As we “happen to be” the best creature in the world, it’s our duty to look after other species. Here are some points which might help to protect wildlife. Join organizations like Greenpeace and World Wildlife Fund. They have devoted themselves to protecting the earth and its animals. Many volunteers join organizations like these and work for the environment. 小题1:

小题2:  Don’t buy something made from ivory and things like this. Baby seals(海豹) are hunted for their skin, as it is used to make expensive coats. Don’t buy them.

小题3:  You can write a heartfelt and logical letter to the government stating your ideas about this problem and how it can be solved.

Recycle(回收利用) and reuse. It will reduce the need to have more raw materials to produce something.小题4:And wild animals’ home will not be destroyed.

Governments should create more safe zones and national parks for wild animals.  小题5: Governments should apply strict laws to stop hunting.

I hope this post was helpful. Share your views about this issue and let your voice be heard.

A.Let your voice be heard.

B.Stop hunting for pleasure.

C.As a result, fewer trees will be cut down.

D.You can build a bird house and feed local birds.E.Refuse fur coats and medicines made from rare animals

F.You can find some organizations like these and join them.

G. There they will be able to move freely without worrying about hunters.

单项选择题 A1/A2型题