问题 单项选择题

5~8分钟时暗适应曲线上的转折点代表了( )

A.视锥细胞暗适应过程的开始
B.视锥细胞暗适应过程的终止
C.视杆细胞暗适应过程的开始
D.视杆细胞暗适应过程的终止
E.视锥细胞光敏色素的更换

答案

参考答案:B

完形填空

       阅读下面短文,根据上下文和所给单词首字母,写出空白处单词正确形式。

      Mrs. Hill thought she came from a rich family and never did any (1)h            . Her husband (2)h           

to do all at home though he was (3)b             in his office. The man had to do some (4)s             in the

market on Saturday. Then he cooked for his family and then he did some (5)w            . When his wife went

to the dances, he began to read his books. He was polite and never (6)m             it at all. 

      It was a Sunday evening, Mrs. Hill made her husband go and see a new film with her. He had something

important to do and couldn't (7)a            . It made her (8)a             . She tore (撕) one of his expensive

dictionaries into (9)p            . Mr. Hill said nothing and put on his clothes and went out. She knew he was

going to his (10)o            . She brought the key to his car out of his (11)p              and (12)t             it away

over the wall. He slapped (掴) her face and left. The woman began to (13)c              sadly. The next morning

she went to see her father, a famous professor, and told him (14)w             had happened to her.

      "Tom slapped me on my face to insult (侮辱) you!" said the woman. "You should retaliate against (报复)

him."

      The old man knew his daughter (15)w            . He asked, "On (16)w             side of your face did he

slap you?"

     "On the left side."

      The professor slapped her on the right side of the face and said, "He's insulted my daughter and I had to

insult his (17)w            !" 

      Of course the woman knew what it (18)m             and she did nothing to provoke (招惹) her

(19)h             any (20)l            .

单项选择题