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问题 单项选择题

小明1980年出生，智力年龄33；小小明1983年出生，智力年龄32岁。根据比率智商的公式，下列说法正确的是（）。

A.小明的智商高于小小明的智商

B.小小明的智商高于小明的智商

C.小明和小小明的智商一样高的

D.没有生理年龄无法比较智商的

答案

参考答案：B

解析：根据比率智商的计算公式，今年是2014年，小明的生理年龄为34，智商为97；小小明的生理年龄是31，智商约为103.2。因此小小明的智商略高于小明。

单项选择题

下面哪一项不会在供应链上造成“牛鞭效应”？（）

A.精确的需求预测

B.价格波动

C.订单批量化

D.供应链陪配给制
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单项选择题

(五)


Space travel is definitely bad for astronauts’ bones, reducing their bone density after only a month of weightlessness, according to French research published on Friday.
Laurence Vico and his fellow workers at St Etienne University called for more research into the effects of microgravity, after their study of 15 astronauts from the Russian MIR station showed bone loss continued throughout space flights.
"Bone loss was especially striking in four astronauts, " the scientists reported in the Lancet Medical Journal.
They measured the Bone Mineral Density(BMD) of bones in the forearm and lower leg of the astronauts who had spent one to six months in space.
The BMD loss was significant in the tibia of the lower leg, a weight-bearing bone, but barely changed in the radius of the forearm. "Our results indicate the need to investigate not only different bones, but also different areas of the same bone since not all sites of the skeleton are similarly affected by space conditions, " they added.
Without gravity the body isn’t bearing any weight so there is no need for calcium which makes bones p, and it becomes empty into the bloodstream.
The research team suggested in future scientists should try to determine if the loss of bone density was only on weight-bearing bones on longer flights, also the possible recovery after returning to Earth.

Scientists have found that ______ .

A．the BMD loss may cause serious illness to astronauts

B．the BMI) loss may cause some change in astronauts’ bodies

C．astronauts shouldn’t care about the BMD loss

D．astronauts should take some calcium before space travel
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