回归热可累及机体多个脏器，但受累最重的器官常是（） A.肾脏 B.心脏 C.脑组织

如图甲所示，一个物体放在粗糙的水平地面上．从t＝0时刻起，物体在水平向右的力F作用下由静止开始运动．在0到t₀时间内物体的加速度a随时间t的变化规律如图乙所示．则

A．在0到t₀时间内，物体速度逐渐变小

B．在t₀时刻，物体速度增加到最大值

C．在0到t₀时间内，物体做直线运动

D．在0到t₀时间内，物体的速度保持不变

患者女性，40岁，有风湿性关节炎病史10年。近5年出现呼吸困难、咳嗽和咯血等症状，并有肝大、腹水、双下肢水肿。查体：心尖区可闻及隆隆样舒张期杂音。心电图右室大。

为明确诊断不必要的辅助检查是（）

A.血沉

B.胸部X线检查

C.超声心动图

D.风湿系列

E.冠状动脉造影

阅读理解。

    In the past, when people had problems, they went to their families or friends to get advices. Today it is

possible to get advice from radio shows, TV programs and telephones hot lines, too. A hot line is a telephone

line that offers a direct way of getting in touch with advisers. Most hot lines are completely anonymous－

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 advice or the phone calls-even if the calls are long distance (距离). At some

hot lines, the advisers are volunteers (志愿者). Other hot lines pay their advisers for their work. Usually the

advisers are full-job people with years of education and experience, but sometimes, the advisers have only

taken a short class before starting to work on the hot line. All the advisers listen to people and help them solve

their problems.

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

2. When people call the hot line advisers, 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 advisers

3. The advisers working at hot lines _____. [ ]

A. are not all paid

B. are all volunteers

C. all have years of education and experience

D. have all been trained for a short time

4. How do the hot line advisers work? [ ]

A. They do what the callers tell them to do

B. They accept the caller's advice

C. They give the callers advice

D. They go to the callers' houses to help them

5. The writer of the article seems to think that _____.[ ]

A. with hot lines people won't get advice from their families or friends

B. hot lines help the callers a lot

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

D. the hot line advisers will solve all of the callers' problems

治疗呼吸衰竭时，为建立通畅的气道应采取以下措施，除了（　　）

A．给予祛痰药促进排痰

B．给予可待因止咳

C．给予支气管解痉药

D．必要时做气管插管吸痰

E．必要时做气管切开吸痰

医药代表在日常工作中遇到问题，当不能确定与“准则”的规定或与所属公司内部标准工作规程是否冲突时，应该：（）

A.只是猜测，因为经验可以判断什么是对与错

B.询问医生

C.考虑几个星期，因为通常正确的答案会出现

D.立即问你的上级