重心坐标实质是一种() A.简单算术平均数 B.加权算术平均数 C.调和平均数 D.

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问题:

重心坐标实质是一种()

A.简单算术平均数

B.加权算术平均数

C.调和平均数

D.众数

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教师应该多采用激励的方式调动学生积极性,因此在教学中应当多表扬学生而不能批评学生。

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国家根据不同时期的经济利益、公共安全或者政治形势的需要,实行相应的贸易管制。目前,我国基于经济利益需要实行的贸易管制制度是()。

A.出口配额许可证管理

B.进口许可证管理

C.两用物项和技术出口许可证管理

D.农药进口管理

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阅读理解

     China reported blistering growth for the last three months of 2009 ,  raising expectations of interest

rate increases and other measures to head_off inflation.

     China has declared that it is recovering from the global economic crisis.

     Ma Jiantang, head of the National Bureau of Statistics,  said Thursday the country's economy grew

by 10.7 percent in the last three months of 2009.

     Ma says China has managed to quickly hold back what he described as "the sliding of the national

economy". He says China has become the first country,  on the whole,  to achieve economic recovery

and stabilization.

     According to previous estimates, Ma says China's  gross domestic product for 2009 rose 8.7 percent,  to nearly five trillion dollars.

     This goes beyond the official growth rate target of eight percent. The government has long considered

eight percent growth essential to create enough jobs for the country's more than one billion people.

     At the same time, Ma says some problems and contradictions are natural.

     Ma says the Chinese government will  give more priority  to  restructuring  economic  and  improving

peoples' livelihood.

     To reduce the effects of the global economic crisis that began in 2008 ,  China loosened lending practices, cut interest rates and began massive spending programs. But the government wants to make sure those measures do not contribute to inflation, which can be politically sensitive in a country where hundreds of millions of people remain poor.

     Beijing resident Ms Wang says she is worried. She says she thinks prices are rising really fast. She points to the price of cabbage, which has increased more than 10 times in the past year.

     The head  of the  Chinese  Banking  Regulatory Commission, this week said the government will step up monitoring of banks and rein in lending to prevent speculative bubbles(投机泡沫) in real estate(房地产) and other assets.

     The World Bank on Thursday released a report that predicts China's economy will grow by nine percent this year. This contrasts with forecasts of 2.5 percent growth rate for the United States and one percent growth for European economies in , because of weaknesses remaining from the global financial crisis.

1. What does the underlined phrase in the first paragraph mean?

A. Prevent.   

B. Begin.  

C. Continue.    

D. Reduce.

2. How many measures did China take to reduce the sliding of the national economy?

A. 2.  

B. 3.  

C. 4.  

D. 5.

3. The global economy in  will ________.

A. increase more quickly than in 2009

B. recover immediately if proper measures are taken

C. remain weak as a result of the global financial crisis

D. remain the same standard as that in 2009

4. The passage is mainly about ________.

A. jobs created for more than one billion people

B. lending practices loosened in China in the new year

C. rapid growth of Chinese economy in last months of 2009

D. fast growth in economy leading to inflation

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患者男,7岁3个月,第1胎。母孕期胎儿胎动较多,顺产,1岁会逐步讲话、走路,但较其他小孩似乎发育晚一点,还没有上学。2年前,患儿家乡经历了一场大暴雨后滑坡,房屋被掩埋,父母带其逃出,但房屋被毁,曾在帐篷里呆过数十天。灾难发生后1周左右,患儿出现睡眠很差,说梦话,有时梦中大哭,白天动作较多,坚决不去上学,整日缠着母亲,无故发脾气。尤其是下雨的夜晚就惊叫,不入睡,坚持要母亲抱着睡。曾在当地医院治疗(治疗情况不详),效果不佳,来精神科就诊。

治疗方法首选()

A.SSRI抗抑郁治疗

B.苯二氮类抗焦虑治疗

C.认知行为治疗

D.经颅磁刺激治疗

E.心境稳定剂治疗

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缺水事故的原因?

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