当装岩机使用中发生故障时，必须立即停车，不用切断电源就可以处理故障。

She is ready to          her best.

A．trys

B．try

C．trying

D．tried

种群进化过程中，自然选择有哪几类？

In the past,when people had problems,they went to their families or friends to get advice.Today it is possible to get advice from radio shows.TV programs or telephone hot lines,too.A hot line is a telephone line that offers a direct way of getting in touch with advicers.Most hot lines are completely anonymous(匿名的)—callers do not have to say their names or telephone numbers.Most hot lines are usually free,too.Callers do not have to pay for their advice or the phone calls—even if the calls are long distance.At some hot lines,the advicers are volunteers.Other hot lines pay their advicers for their work.Usually the advicers are full-job people with years of education and experience,but sometimes the advicers have only taken a short class before starting to work on the hot line.All the advicers listen to the people and help them solve their problems.

小题1:A hot line is a telephone line ______.

A．that is hot

B．through which people get advice

C．whose number no one knows

D．through which callers take a short class小题2:When people call the hot line advicers,they______.

A．often give their names and telephone numbers

B．generally have to pay for the long distance calls

C．usually pay nothing for most of the calls and advice

D．always try to get in touch with the volunteer advicers小题3:The advicers working at hot lines______.

A．are not all paid

B．have all been trained for a short time

C．are all volunteers

D．all have years of education and experience小题4:The writer of the article seems to think that______.

A．with hot lines people won’t get advice from their families and friends

B．hot lines help the callers a lot

C．people had better pay for the advice and phone calls

D．the hot line advicers will solve all of the callers’ problems

下述部位神经支配的对应关系判断

下肢前后面

A．T₇
B．T₁₀
C．L_1～5
D．T₁₂～L₁
E．S_4～5

我国新生儿败血症多见的病菌是（）。

A．肠球菌

B．链球菌

C．葡萄球菌

D．大肠杆菌

E．绿脓杆菌