在这个路口可以掉头。

根据短文的内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Jealous of the kids at school who are smarter than you and seem to learn more quickly? Don’t worry.  小题1: 

  小题2: However, according to a recent study, IQ can rise—not just by one or two points, but by as many as 21 points!

Scientists have found that IQ changes are linked to changes in part of the brain called gray matter, which was seen to grow and become denser（更加密集）in the brains of people whose IQs improved greatly.

  小题3: One is to train your short-term memory. Previous research has proven that short-term memory is the basis for intelligence, so trying to recognize or retell something that you have seen or heard can help raise your overall brain power.   小题4: 

A good night’s sleep will also help improve your concentration.  小题5: It helps you stay focused for longer the next day.

Scientists have also found that exercise helps. Walking 30 minutes a day five times a week and doing exercise will help you become more knowledgeable—as well as healthier and fitter.

A．There are several ways of increasing your brain’s gray matter.

B．Your brain deals more efficiently with things you truly like.

C．With a bit of brain training, the chances are that you can be as smart as they are.

D．So maybe it’s a good idea to get your brain in training right away.E. Getting enough sleep is like pushing the reset button in your brain.

F. The more you work on it, the better you will become.

G. People used to assume that a person’s IQ was unchangeable.

分4组，任选一组作答。每题的备选项中，只有1个最符合题意。

下列关于粉尘性质的叙述中，不正确的是( )。

A．粉尘中游离二氧化硅的含量是危害人体的决定因素

B．粉尘粒度是指粉尘颗粒大小的尺度

C．粉尘的浓度越高，对人体危害越大

D．粉尘粒子不带电荷

提出“若要小儿安，常受三分饥与寒”的医家是（）。

A.钱乙

B.万全

C.陈实功

D.李中梓

E.绮石

下列关于业主对工程项目管理的表述中，正确的是（）

A、管理目的是实现项目各利害关系人的全部期望

B、业主是对工程项目进行全面管理的中心

C、在项目建设过程中，业主对项目大都采用直接管理方式

D、以进度为中心进行控制

《中华人民共和国民用航空法》规定，机场净空保护区域内存在的可能影响飞行安全的建筑物、构筑物、树木、灯光和其他障碍物体，应当在规定的期限内清除，对由此造成的损失，应当（）

A.给予补偿或者依法采取其他补救措施

B.不给予补偿

C.给予补偿并依法采取其他补救措施

D.以上三项都不对