创新意识是专业技术人员对创新与创新的价值性、重要性的一种认识水平、认识程度以及由此形

X线胸片显示肺动脉段凹陷的先天性心脏病是

A．法洛四联症

B．动脉导管未闭

C．肺动脉狭窄

D．室间隔缺损

E．主动脉狭窄

按要求完成下列句子，每空一词。

1. She has to do the washing every day. (改为一般疑问句)

    _________ she _________ to do the washing every day?

2. She has a backache. (对画线部分提问)

   What's _________ _________ with _________?

3. He should lie down and rest. (改为否定句)

   He _________ _________ lie down and rest.

4. I had some fruit this morning. (改为否定句)

   I _________ _________ _________ fruit this morning.

5. I visited my friends in Beijing twice a month last year. (就画线部分提问)

    _________ _________ did you visited your friends in Beijing last year?

6. Miss Brown usually gets to school on foot. (改为同义句)

    Miss Brown usually _________ _________school.

7. She usually watches TV on weekends. (就画线部分提问)

    _________ does she usually _________ on weekends?

8. I'm not improving my English. I think. (合并成一句)

    I _________ _________ I _________ _________ my English.

作为主裁，在赛前应准备的用具有记分纸等，还有秒表、硬币、（）。

若LM方程为Y=750+2 000r，当货币需求与供给均衡时，利率和收入为( )。

A．r=100，Y=750

B．r=10%，Y=800

C．r=10%，Y=950

D．r=10%，Y=900

宽展分自由宽展、限制宽展、强迫宽展。