水泵长期停运时，应在泵内（）。A、放空水 B、存满水 C、存一定量的水 D、存油

法国作家法朗士说：“好奇心造就科学家和诗人。”下列理解与与之无关的是

A．我们要在道德和法律允许的范围内积极探究

B．好奇心能激励人们接触新事物、研究新问题

C．好奇心是造就人才的必备条件之一

D．学习和科研的不断进步离不开好奇心

阅读理解.根据短文内容,选择正确答案。

     In almost every big university(大学)in the United States, football is a favorite sport. American

football is different. Players sometimes kick the ball, but they also throw the ball and run with it.

They try to take it to the other end of the field. They have four chances(机会)to move the ball

ten yards(码). They can carry it or they can throw it. If they move the ball ten yards, they can

try to move it another ten yards. If they move it to the end of the field, they receive six points(点).

     It is difficult to move the ball. Eleven men on the other team try to stop the man with the ball.

If he does not move the ball ten yards, his team kicks the ball to the other team.

Each university wants its own team to win. Many thousands of people come to watch. They all

shout for their favorite team.

     Young men and women come on the field to help the people shout more. They dance and

jump while they shout.

     Each team plays ten or eleven games each season.

     The season begins in September and ends in November. If a team is very good, it may play

another game after the season ends. The best teams play again on January 1st, the first day of the

New Year. Many people go to see these games and many others watch them on TV.

1.The passage talks about ______.

A.football                        

B.how to play football

C.American sports            

D.American football

2.We can ______ the football in both American football and Chinese football.

A.kick    

B.throw

C.run with

D.catch

3.Why is it difficult to move the ball? Because ______.

A.ten yards is a long way

B.many men on the other team try not to let the ball come near

C.the playing field is very large

D. eleven men have to catch the ball one by one

4.If they ______, the teams will play on January 1st.

A.receive six points

B.play eleven games in the season

C.are the best teams    

D.move the ball to the end of the field

5.Many people come to watch football and they want their team to win.

   Which of the following is not their act?

A.Jumping

B.Dancing

C.Crying    

D. houting

关于慢性淋巴细胞白血病说法错误的是（）

A.瘤细胞浸润包膜

B.淋巴结结构破坏

C.淋巴结切面见大片坏死

D.淋巴结切面呈鱼肉状

E.肿大淋巴结可相互融合

思想政治课程教学设计的内容包括哪些？

制冷循环热力完善度的定义是______。

A．任一制冷循环的制冷系数与逆卡诺循环的制冷系数的比值
B．在相同冷源温度下，任一制冷循环的制冷系数与逆卡诺循环制冷系数之比
C．在相同冷热源温度下，理论制冷循环的制冷系数与逆卡诺循环制冷系数之比
D．在相同冷热源温度下，任一制冷循环的制冷系数与逆卡诺循环制冷系数之比