将一小球竖直向上抛出，小球在竖直上升过程中所受的合力为F1，在竖直下落过程中所受

Jane is a nice girl. She lives in London. She studies(学习) in a middle school. She gets up at six every day. She likes reading English. She’s a bright girl. She draws pictures well. After school, she often reads newspapers with her grandmother. At seven o’clock in the evening. Jane has supper(晚饭) at home. Every day at eight she does her homework and goes to bed at nine.

根据短文内容，选择正确答案（10分）

小题1:Jane lives in______.

A、England.             B、New York             C、Paris

小题2:What does Jane like to do?________.

A、She likes reading story-books.

B、She likes drawing big pictures

C、She likes learning English.

小题3:She is a_________ girl.

A、nice                 B、clever               C、nice and bright

小题4:What does she often do after school? ________.

A、She draws pictures.

B、She has supper

C、She does some reading with her grandma

小题5:What time does she go to bed? ________.

A、8∶00               B、9∶00                C、8∶35

为尽量发现病人，在制定筛选方法标准过程中，常采用（）。

A.提高方法的灵敏度

B.提高方法的特异度

C.降低假阳性率

D.提高假阴性率

E.使假阴性率与假阳性率接近

凡影响行车的施工、维修作业，不得利用列车间隔进行(特别规定的慢行施工除外，都必须纳入天窗。

止回阀的驱动方式是().

A.流体作用

B.手动

C.力水液压传动

D.机械作用传动

按临床试验阶段分期，考察在广泛使用条件下药物的疗效和不良反应，评价在普通或者特殊人群中使用的利益与风险关系以及改进给药剂量等的试验是（）

A.Ⅰ期临床试验

B.Ⅱ期临床试验

C.Ⅲ期临床试验

D.Ⅳ期临床试验

E.生物等效性试验