可引起再生障碍性贫血的药物（）. A．氯霉素  B．头孢噻肟钠  C．克拉霉素  D

Dear Mr. Li，

I’m not happy. I have too many rules in my home. On weekdays I have to get up at half past six, read English for half an hour and then walk to school. I can’t play with my friend after school because I have to my homework first and then walk my dog. I can’t watch TV on school days. And I have to go to bed before ten o’clock, On weekends, I needn’t get up at half past six. But I have to get up early, because I have to clean my room and wash my clothes. Then in the afternoon I have to go to the Children’s Palace to learn dancing. When I come back, I have to help my mom make dinner. I can’t play computer games. I never have fun. What can I do?

Yours,

Linda

小题1:When does Linda have to get up on weekdays?

A．At 6:00a.m.

B．At 6:30a.m.

C．At 7:00a.m.

D．At 7:30a.m.小题2:What does Linda have to do first after school?

A．She has to clean her room.

B．She has to do her homework.

C．She has to make dinner.

D．She has to walk her dog.小题3:What does Linda do at the Children’s Palace on weekends?

A．She learns drawing.

B．She plays games.

C．She plays computer games.

D．She learns dancing.小题4:Which of the following is TRUE?

A．Linda is busy and she isn’t happy with her life.

B．Linda goes to bed before 9:00p.m. on weekdays

C．Linda can play computer games on weekends.

D．Linda often washes her clothes on Saturday afternoon.

关于"全脑死亡"的定义错误的是（）。

A.大脑、中脑、小脑和脑干的不可逆的死亡

B.呼吸停止、瞳孔对光反射消失

C.通常不能维持很长时间

D.大脑皮质和脑干死亡

E.以上都不存在

Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an (6) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (7) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages (8) .

As administrators seek to block dangerous email attachments through the recognition of well-known (9) , virus writers use other extensions to circumvent such protection. Executable (.exe) files are renamed to .bat and .cmd plus a whole list of other extensions and will still run and successfully infect target users.Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs commands in the background to steal your passwords and give the (10) access to your network.

9（）

A.names

B.cookies

C.software

D.extensions

直接选用加工表面的（）作为定位基准称为基准重合原则。

A.精基准

B.粗基准

C.工艺基准

D.工序基准

（）属于弹性思维范畴，通过由此及彼的思维过程，开拓研究者的思路。

A.推理思维

B.联想思维

C.直觉思维

D.发散思维