主要用于极性较大的物质的分离和富集的方法是（） A.大孔吸附树脂法 B.凝胶过滤

Last week when I was sitting in my office，I heard an elderly lady talking on the phone about her husband．Her husband’s name was Ed．He dropped her off for her doctor’s appointment and was going to park the car and wait for her．She was so upset that she started to cry．I knew I should take action．

The lady told me her name was Helen and she called the restaurant she and her husband were going to have lunch at after her appointment to see if he was waiting for her there．She explained that she thought her husband parked the car in the parking lot and waited for her in the car but she didn’t find him there so she returned to see if he entered the medical building，but Ed was not there either．She regretted making her husband park the car alone since some signs of Alzheimer’s(早老年性痴呆病)had happened in his behavior．I asked a few nurses to help look for Ed inside and outside the medical building according to Helen’s description．Then I offered to drive Helen to the restaurant to see if Ed was waiting for her there．

On arriving at the parking lot of the restaurant，Helen began to search for Ed’s car but she failed，which suggested Ed wasn’t there．We decided to have a talk with the manager before we returned to the hospital．On our way to the manager’s office．I received a call from a nurse，who said they had found Ed．What a relief!  But we still needed to go on searching since he forgot where he parked his car! Fortunately, we didn’t have much difficulty finding it．

As I waved good-bye to the couple, I thought “This is true love in life．The love is not romantic but it stays with us all the time．’’

小题1:We learn from this passage that Ed    ．

A．went to the restaurant himself

B．might have developed Alzheimer’s

C．visited his friend in the hospital

D．worried about his wife very much小题2:When did the author know that Ed was found?

A．After the author and Helen returned from the restaurant．

B．While the author and Helen were on their way to the restaurant．

C．Before the author and Helen found the manager of the restaurant．

D．When the author and Helen arrived at the parking lot of the restaurant．小题3:What can we infer from the passage?

A．The author was Helen’s friend．

B．The author had seen Ed before．

C．The author went to see his doctor．

D．The author worked in the hospital．小题4:The underlined word‘‘relief'’in the third paragraph means‘‘   ’’．

A．a feeling of comfort

B．the final conclusion

C．something misleading

D．an important discovery小题5:From the passage, we can know that the author was        .

A．serious

B．hardworking

C．warm—hearted

D．experienced

CE角正常值

A．直接缝合皮肤
B．凡士林纱布覆盖包扎
C．中厚游离皮片移植
D．邻指带蒂皮瓣
E．腹股沟轴型皮瓣

_____ your help, I won't do the work well. [ ]

A. With

B. Without

C. Thanks to

D. Because of

下列选项中，可以进行固定桥修复的是（）

A.基牙牙槽骨吸收达根长的1／3

B.游离端缺失牙数目超过2个

C.牙槽骨吸收未稳定

D.对颌牙伸长形成牙间锁结，下颌运动受限

李某将玉佩交还王某，则下列说法中，不正确的是( )。

A．李某可以请求王某支付承诺的报酬

B．李某可以请求王某支付保管玉佩所支付的必要费用

C．王某不支付承诺的报酬或者保管玉佩所支付的必要费用的，李某可以行使留置权

D．李某已经向王某请求支付承诺的报酬了，就不可以再请求王某支付保管玉佩所支付的必要费用