下列四组人物中，毕升归入哪组最合适 [ ] A．张仲景、孙思邈 B．苏轼、李清照

If you ask your parents: “Did you buy salt recently?” They might either say: “Yes, we bought more salt than usual”, or “No, we couldn’t find any in the market.”

This is because of the recent craze(狂热) of salt buying in China. In big cities like Beijing, Shanghai and Shenzhen, salt almost sold out in only one night.

After the big earthquake in Japan on March 11, there was a nuclear leak(核泄漏). And rumors(传言) about whether it will affect our daily life appeared: first, iodized(含碘的) salt can keep us from the dangers of radiation(辐射)；second, there will be less sea-salt in the ocean because of the nuclear pollution.

Both the government and experts said the rumors were not true, but people still bought as much salt as possible. Why? Many salt-buyers didn’t really care or know what experts or the government were saying. That was the real reason behind the craze of salt buying.

On March 20, the government said the salt market is back to normal. And most of China’s salt is from lakes, not the ocean.

Now, many people want to return the salt they bought. “There is no reason why those people should get their money back,” an article in Xinhua Daily Telegraph said. “They made the craze in the first place.”

Perhaps people should learn a lesson from the salt: don’t believe everything you hear.

小题1:The recent craze of salt buying in China happened because of ________.

A. the earthquake          

B. the rumors              

C. the shortage(缺乏) of salt

小题2:When did the rumors start?

A. On March 11.        

B. After March 11.         

C. On March 20.

小题3:According to the passage most of China’s salt is from ________.

A. lakes                    B. the ocean                C. rivers

小题4:Which of the following statements is true according to the passage?

A. People believed what the government and experts said first.

B. People could return the salt and got back their money later.

C. Salt almost sold out in only one night because of the rumors.

小题5:The passage tells us that ________.

A. we can’t believe everything we hear

B. there must be a nuclear leak after an earthquake

C. only iodized salt can keep us from the dangers of radiation

已知地球半径R ＝6.4×10⁶m，地面附近重力加速度g ="9.8" m/s2，计算在距离地面高为h＝2×10⁶m的圆形轨道上的卫星做匀速率圆周运动的线速度v和周期T.

对于同一投资方案，下列说法错误的是（）。

A、资本成本越高，净现值越低

B、资本成本越高，净现值越高

C、资本成本相当于内部报酬率时，净现值为零

D、资本成本高于内部报酬率时，净现值小于零

E、资本成本高于内部报酬率时，净现值大于零

土土哈是围困忽必烈军队的钦察人将领。

管理层次多，往往导致管理费用增多，这一特点属于( )。

A．跨度宽、层次多的组织结构
B．跨度宽、层次少的组织结构
C．跨度窄、层次多的组织结构
D．跨度窄、层次少的组织结构