缩宫素对子宫平滑肌作用的特点是（）。A．大剂量时引起子宫底节律性收缩，子宫颈松弛 B

已知关于x的一元二次方程mx²-（2m-1）x+m-2=0（m＞0）

（1）求证：这个方程有两个不相等的实数根；

（2）如果这个方程的两个实数根分别为x₁，x₂，且（x₁-3）（x₂-3）=5m，求m的值．

频谱多普勒超声可直接测量的血流参数是

A．阻力指数(R

B．压力阶差(P

C．搏动指数(P

D．收缩/舒张期速度比(S/

E．收缩期峰值速度(V

阅读理解。

     As any homemaker who has tried to keep order at the dinner table knows, there is far more to a family meal

than food. Sociologist Michael Lewis has been studying 50 families to find out just how much more.

     Lewis and his co-workers carried out their study by videotaping (录像) the families while they ate ordinary

meals in their own homes. They found that parents with small families talk actively with each other and their

children. But as the number of children gets larger, conversation gives way to the parents'efforts to control the

loud noise they make. That can have an important effect on the children. "In general the more question-asking

the parents do, the higher the children's IQ scores," Lewis says. "And the more children there are, the less

question-asking there is." The study also provides an explanation for why middle children often seem to have a

harder time in life than their siblings (兄弟姐妹). Lewis found that in families with three or four children, dinner conversation is likely to center on the oldest child, who has the most to talk about, and the youngest, who needs the most attention. "Middle children are invisible," says Lewis. "When you see someone get up from the table and walk around during dinner, chances are it's the middle child." There is, however, one thing that stops all

conversation and prevents anyone from having attention: "When the TV is on," Lewis says,"dinner is a

non-event."

1. The writer's purpose in writing the text is to ______.

A. show the relationship between parents and children

B. teach parents ways to keep order at the dinner table

C. report on the findings of a study

D. give information about family problems

2. Parents with large families ask fewer questions at dinner because _______.

A. they are busy serving food to their children

B. they are busy keeping order at the dinner table

C. they have to pay more attention to younger children

D. they are tired out having prepared food for the whole family

3. By saying "Middle children are invisible" in paragraph 3, Lewis means that middle children ______.

A. have to help their parents to serve dinner

B. get the least attention from the family

C. are often kept away from the dinner table

D. find it hard to keep up with other children

4. Lewis' research provides an answer to the question ______.

A. why TV is important in family life

B. why parents should keep good order

C. why children in small families seem to be quieter

D. why middle children seem to have more difficulties in life

5. Which of the following statements would the writer agree to?

A. It is important to have the right food for children.

B. It is a good idea to have the TV on during dinner.

C. Parents should talk to each of their children frequently.

D. Elder children should help the younger ones at dinner

某地工商管理部门在对市场进行检查时，发现个体户刘某所卖的干货中有价值 3000元左右的假酱油、假味精，因而作出没收假干货，吊销刘某的营业执照，并对刘某处以 1000元罚款的行政决定。刘某不服，向其上一级工商行政管理机关申请行政复议。复议机关作出对刘某罚款4000元，对其他行政处罚予以维持的复议决定。刘某对该复议决定不服，向人民法院提起行政诉讼。受理法院判决将罚款降至1500元，其他处罚决定予以维持。对于本案的行为，下列看法正确的是哪些

A．对于相对人提起的行政复议，复议机关不应当加重对相对人的处罚

B．人民法院不能代替行政机关直接变更罚款数额，本案中法院将罚款数额降低的行为是违法的

C．人民法院认为本案中的罚款数额明显失当，可以直接作出变更决定，但对其他处罚决定即使认为明显不当也不得直接变更

D．人民法院认为罚款明显不当，可以直接作出变更决定，而且对其他的行政处罚决定认为明显不当时也可以直接进行变更

角色压力：指在组织或一特定的社会环境中，因有不利因素干扰角色任务的运作，致使个人陷入无所适从的困境。

下列属于角色压力的是（）。

A．职场女性赶时间上班，赶时间买菜、做饭，还得抽空和家人联络感情等等，总是觉得没有真正属于自己的时间

B．小李上班不想家务事，回家也不想工作，工作生活两不误

C．银行要求职员对顾客笑脸相迎，但有些人感到很难做到

D．张老师最近教学任务繁重，出版社又向他约稿，他忙得不亦乐乎