问题 填空题 案例分析题

下图为某些信息传递过程的模式图,①、②、③、④表示各种细胞产生的不同种类的信息分子。

在大多数情况下,产生④的细胞是被抗原激活的()细胞。

答案

参考答案:辅助性T细胞

阅读理解

阅读理解。

      Hemingway was one of the famous writers. He was born in America in 1899. His father was a doctor

and loved sports very much, and his mother taught music. Among the six children in the family, Hemingway

was the second oldest.

         Hemingway had written many books in his life. The Old Man and the Sea is one of the most famous

and also my favourite. It came out in 1952. The main character in the book is a fisherman. He is an old

man and fishes alone. People think he is a man with bad luck, because he doesn’t get a fish in eighty-four

days. Every evening, he comes home with his empty boat. But the old man believes himself. Then on the

eighty-fifth day the man takes a big fish. Although he meets a lot of trouble, the old man never gives up.

1. Hemingway’s father was a fan of ___________.

A. books

B. sports

C. music

D. art

2. The Old Man and the Sea was published(出版) in _________.

A. 1852

B. 1899    

C. 1952

D. 1989

3. The old man doesn’t get a fish until the _________ day.

A. fifteenth  

B. eightieth      

C. eighty-fourth    

D. eighty-fifth

4. What does the old man do when he can’t get a fish?

A. He has to look for food somewhere else.  

B. He doesn’t give up fishing.  

C. He doesn’t fish any more.              

D. He has nothing to do.

5. What can we learn from the old man?

A. When we are in trouble, we should not give up.

B. When we want to fish, we can get a big fish.

C. We can do everything well because we are young.

D. We can live a better life if we like fishing.

问答题