Mr. King didn’t know __________ yesterday evening.

A. when does his son came home                               B. when his son comes home

C. when his son came home                                         D. when did his son come home

Mr. King didn’t know __________ yesterday evening.

1. A.
   when does his son came home
2. B.
   when his son comes home
3. C.
   when his son came home
4. D.
   when did his son come home

—When did his parents pass away?

—It was on April 14th________the earthquake hit Yushu County.

A．what                                                  B．that  

C．which                                                D．when

阅读理解

阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在正确选项上画勾。

　　It would be impossible for most people to publish 400 books even m dozens of lifetimes. But author extraordinary Isaac Asimov has produced that remarkable output during his 41-year book career and shows no signs of slowing down.

　　Many Asimov's science and science fiction works deal with space travelsuch as his classic Foundation Trilogyyet, Asimov himself is a serious homebody. He would be perfectly happy never leaving his Manhattan apartment, where he lives with his wife, psychiatrist author Janet Jeppson. “I travel in my writing to the far ends of the universe,” he says, “so I don't have to travel in real life.” And that includes going into space. Even if invited, he wouldn't want to go.

　　But he enthusiastically supports the space movement, serving on the NSS Board of Governors. Asimov, a workaholic who says he wants to end his days “face down on my typewriter” spends eight hours a day, seven days a week at the keyboard. The Russian-born son of American immigrants, Asimov (1920 ～ ) began writing science fiction at age 11. His first story appeared in print when he was 18. As he continued writing, he completed college, earning a Ph.D. in chemistry.

　　Known mainly as a science fiction writer, Asimov is also an essayist, journalist, biographer and humorist. Over the years, he has won dozens of awards, including the title Grandmaster of Science Fiction.

1．After his 41 years of writing, Isaac Asimov ________.

[　　]

A．stops writing

B．slows down

C．produces no more books

D．still keeps on writing

2．The reason why many Asimov's science and science fiction works deal with space travel is that ________.

[　　]

A．he had traveled to the far ends of the universe

B．he traveled a lot

C．he is a writer of rich imagination

D．both A and B

3．Asimov has produced so many books, because ________.

[　　]

A．he supports the space movement

B．he is a workaholic

C．he spends too much time writing

D．both B and C

4．When did his first story appear in print?

[　　]

A．When he was eleven.

B．When he was eighteen.

C．When he completed college.

D．When he earned a Ph.D.in chemistry.