诊断椎间盘膨出的特征性表现()A．椎间盘内有气影 B．椎间盘后缘有弧形钙化 C．椎间

Do you play a musical instrument? If so, you may be getting smarter. A recent study shows that taking music lessons can raise a person’s IQ.

Scientists studied 132 children in Canadian schools. At the beginning of the school year, these children took an IQ test. Then they were divided into four groups. One group took singing lessons. Another group took weekly piano lessons. The third group took classes in drams(戏剧). And the last group did no special activities at all.

At the end of the school year, the 132 children took an IQ test again. In all four groups, the average score went up. However, the piano players’IQs went up 7.0 points on average. The average increase for the other three groups was only 4.3 points.

The researchers say that the difference is small and it may not result in better grades for the piano players. However, they still consider the results important. Learning an instrument helps kids becomes better at concentrating and at memorizing things. Therefore, the researchers say, it may be good for brain development in young people.

If you have a chance to learn to play a musical instrument, never miss it. Remember it can make you smarter.

小题1: Which of the following is NOT true of the study?

A．It was done in Canada.

B．It was done by some musicians.

C．It included four groups of children.

D．It took one school year to complete.小题2: Which of the following is true?

A．Average IQ scores increased in all the groups.

B．Only the piano players’ IQs increased.

C．The average increase for all four groups was 4.3 points.

D．Most of the children’s IQs did not go up.小题3: The underlined word “they” in the passage refers to ______.

A． better grades

B．piano players

C．researchers

D．instruments小题4: What’s the main idea of the passage?

A．It’s good for us to listen to music.

B．Everyone should learn to play the piano.

C．Take an IQ test before you learn instruments.

D．Learning instruments may make kids smarter.

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最可能的诊断及诊断依据。

关于全球海陆分布的叙述，正确的是（ ）

A．海洋与陆地的面积比约为3：7

B．全部位于东半球的大洋是印度洋

C．东半球的陆地面积大于海洋面积

D．世界面积最小的洲是欧洲

站务会至少（）召开一次。

A、每周

B、每月

C、每天

D、未明确要求

企业资源规划中的总帐设置功能允许设定会计期间。对此功能的访问被授予财务、仓库和订单录入部门的用户。这种广泛的访问最有可能是因为（）

A、经常性地修改会计期间的需要

B、需要向关闭的会计期间过入分录

C、缺乏适当的职责分工政策和步骤

D、需要创建和修改科目表及其分配