采用质量法计算混凝土的砂石用量时，必须考虑混凝土的含气率。( )

阅读理解。

   Men are spending more and more time in the kitchen, according to a report from Oxford University.

   Women, who, thirty years ago, spent under two hours a day on cooking, now spend just one hour and

seven minutes,  but they still spend far more time in the kitchen than men.

    "I was married in 1974. When my father came to visit me a few weeks later I was wearing an  apron (围裙). When  I  opened  the door, he laughed at me," .said Prof. Gershuny. "That would never happen

now. "

     The report also makes clear that the family meal is much healthier than before,  because of people's

learning how to cook.

   Two-thirds of adults say that they come together to share at least three times a week, even if it is not

necessarily around a kitchen or dining room table.

     Anne Murphy said, "The evening meal is still clearly important to family life and more people are now

talking about family time. We think we'll return to traditionalism (传统主义). "

   However, Prof. Gershuny  said that the family meal was now hardly eaten by all of its members around

a table - with many "family meals" in fact taken on the sofa in the sitting room, and shared by different

members of the family.

1. Which of the following statements is  true?  

A. Women spend less time on cooking now.

B. Women spend more time on cooking now.

C. Women spend less time than men on  cooking.

D. Men spend more time on cooking than  women. 

2. If a man did some cooking many years  ago, others might_____. 

A. enjoy him            

B. laugh at him

C. stop him              

D. learn from him

3. Why is the family meal much healthier  now?

A. Because more and more men enjoy  cooking.

B. Because people learn how to cook.

C. Because there are more family meetings.

D. Because women are better at cooking.  

4 The underlined words "evening meal"  refer to "_____". 

A. breakfast              

B. lunch

C. supper                

D. afternoon tea  

5 People have "family meals" in order  to_____. 

A. sit at table

B. play games

C. talk about something

D. have a good time

腹部听到连续性血管杂音，常见于下列哪一种病症（）

A.动脉瘤

B.动脉狭窄

C.腹壁静脉严重曲张

D.腹块压迫腹主动脉

E.肝癌压迫肝动脉

女，66岁，手关节痛伴晨僵3年。查体：双手近端和远端指间关节压痛，无软组织肿胀，远端指间关节变形，可见多个heberden结节。化验：ESR22mm/h类风湿因子22U/L（正常），抗CCP抗体阴性。X线片示远端指间关节半脱位。最可能的诊断是（）。

A.强直性脊柱炎

B.类风湿关节炎

C.风湿性关节炎

D.银屑病关节炎

E.骨关节炎

如图所示，两个小球A和B质量分别是m_A=2．Okg，M_B=1．Okg，球A静止在光滑水平面上的M 点，球B在水平面上以初速度v_o=9m/s从远处沿两球的中心连线向着球A运动．假设两球相距L≤18m时存在着F=2N的恒定斥力，L＞18m时无相互作用力．求：

（1）当两球相距最近时球A的速度；

（2）两球相距最近时的距离．

企业集团选择“做大”、“做强”路径时，会直接影响预算指标的选择。“做大”导向下，预算指标会侧重（）。

A.息税前利润

B.营业收入

C.净资产收益率

D.利润总额