单面切纸机是印刷裁切中用途最为广泛和必不可少的裁切设备，可用于裁切各种单张承印材料、

Dear John, Thank you very much for your letter. I am glad that you enjoyed your holiday with me. We enjoyed having you and your sister here. We hope that you will both be able to come again next year. Perhaps you’ll be able to stay longer next time you come. A week is not really long enough, is it? If your school has a five-week holiday next year, perhaps(或许) you’ll be able to stay with us for two or three weeks.

We have been back at school three weeks now. It feels like three months! I expect(期待) that you are both working very hard now that you are in Grade One. I shall have to work hard next year when I am in Grade One. Tom and Ann won’t be in Grade One until 2011.

They went for a picnic yesterday but I didn’t go with them because I cut my foot and I couldn’t walk very well. They went to an island and enjoyed themselves. Do you still remember the island? That’s where all five of us spent the last day of our holiday.

Tom, Ann and I send our best wishes to Betty and you. We hope to see you soon.

Yours sincerely,

Michael

小题1:        stayed with Michael for a holiday.

A．Only John

B．Only Tom and Ann

C．John and his sister

D．Only Tom小题2:Their holiday lasted for          .

A．one week

B．two weeks

C．three weeks

D．five weeks小题3:From the words of  “It feels like three months!” we know that          .

A．Michael’s teacher is very strict with the students

B．Michael is pleased with his school report

C．Michael has no interest in learning

D．Michael works very hard at his studies小题4:        in Grade One now.

A．John and his sister are both

B．John is

C．John’s sister is

D．Michael is小题5:Why didn’t Michael go to the island for picnic?

A．He had to go to school.

B．He didn’t like the island.

C．Something was wrong with his foot.

D．The weather was bad that day.

导致重症烧伤患者真菌感染的最主要原因是（）

A.免疫功能增强

B.长期卧床

C.多次手术

D.长期大量使用广谱抗生素

E.静脉高营养

达尔文的自然选择学说主要内容包括

①过度繁殖  ②生存斗争  ③遗传变异  ④适者生存

A．①②④

B．②③④

C．①②③

D．①②③④

抽油泵固定阀、游动阀被砂、蜡卡死时，用碰泵方法可以排除。

1984年，Apple公司的Macintosh计算机提供了第一个图形界面和描述为“直观友好的用户”多任务操作系统，这个操作系统是（）。

A.Mac

B.Windows

C.Unix

D.Linux