机械加工的主要职业危害是（） A.有毒气体 B.粉尘 C.不良气象条件 D.噪声 E

Jack went to a barber's shop and had his hair cut, but when he came out, he was not happy with the result(结果). When his friend Bob saw him, he laughed and said, "What has happened to your hair, Jack?"

Jack said, "I tried a new barber's shop today, because I wasn't quite satisfied with my old one, but this one seems even worse."

Bob agreed(同意). "Yes, I think you're right, Jack. Now I'll tell you what to do when you go into a barber's shop next time: look at all the barber's hair, find out whose hair looks worst, and then go straight to him."

"Why shall I go to him?" Jack asked. "But that would be foolish!"

"Oh, no, it wouldn't," answered Bob. "Who cut that man's hair? Just think it. He couldn't cut it himself, could he? Another of the barbers cut it. So you know he can't be the worst barber."

小题1: When Jack went out of the barber's shop, he was not happy because ____.

A．nobody had cut his hair

B．the barber hadn't cut his hair well

C．the barber had cut his hair carefully

D．he was not satisfied with his old barber小题2:"I tried a new barber's shop today." means ____.

A．this barber's shop was a new one

B．this was the only barber's shop in this town

C．Jack often went to this barber's shop

D．Jack had not been to this barber's shop before小题3:After Jack had his hair cut, he thought ____.

A．the new barber's shop was the best one

B．the old barber's shop wasn't so good as the new one

C．the new barber's shop was worse than the old one

D．the old barber's shop was the worst one小题4:Bob told Jack to find out which barber's hair looked the worst and then go straight to him. Why?

A．Because he was certainly the best barber.

B．Because he was free all the time.

C．Because he was the worst barber.

D．Because he wasn't the worst barber.小题5:From the story we know that ____.

A．it's foolish to have one's hair cut at a barber's shop

B．barbers cut each other's hair

C．barbers never have their hair cut

D．a barber always cuts his hair by himself

2012年春节期间，广西河池市龙江河发生镉污染， 2月3日江苏镇江曝出水源受苯酚污染，这两起事件都严重影响了沿岸和下游地区居民的饮水安全。有专家说，影响中国经济的首要问题就是水。据此回答1~2题。

1．目前人类比较容易利用的淡水资源主要是[ ]

A．陆地上的冰川    

B．江河湖泊水、浅层地下水

C．湖泊水、地下水    

D．海洋水和河水

2．上述水资源遭污染的地区，应采取的的必要措施是[ ]

A．减少化肥农药的使用          

B．污水处理，暂停自来水供应

C．少使用洗涤剂和清洁剂        

D．降低生产耗水，提高利用效率

“它是我国历史上第一部药典，它比欧洲最早的《佛罗伦萨药典》（1498年出版）早839年，比1535年颁发的世界医学史上有名的《纽伦堡药典》早876年，比俄国第一部国家药典（1778年颁行）早1119年。”这部药典是（）

A.千金方》

B.《四部医典》

C.《唐本草》

D.《神农本草经》

命令ppp authentication \{pap
chap} scheme default用来（）

A.定义PPP用户的验证方法表

B.规定ppp用户的验证方式

C.将PPP用户的验证方法表应用于接口

D.规定该接口可以使用PPP协议

患者，女性，40岁。因经量增多、经期延长半年入院。患者月经周期正常，无痛经、无接触性出血、无腹部包块、无宫内节育器。妇科检查： * * 顶端见直径约3cm包块，颜色鲜红、表面光滑、质地中等、有少许渗血，活动，有蒂与宫颈上方相连，子宫前位，常大，双附件未及异常。

该患者最有可能的诊断是（）

A.子宫颈癌前病变

B.子宫颈癌

C.子宫黏膜下肌瘤

D.子宫内膜癌

E. * * 肿瘤