为什么“反粒度”过滤能提高滤池性能？

阅读理解。

     A recent report says about 18% of China teenagers can have problems with their minds. Some students

become worried because they have to study very hard. Others have trouble getting on well with people like

their parents and classmates.

     Zhang Qiang, a Junior 2 student from China, could not understand his teachers in class and was doing

badly in his lessons. He was afraid of exams. When he looked at the exam paper, he couldn't think of anything

to write.   

     Another student, a 15-year-old girl called Wu Yan from Guangdong often argued (争吵) with her

classmates even her parents because of some different ideas. She became so angry with them that she

started  to cut her finger with a knife.

      However, many students who have problems won't go for advice or help. Some think they will look

stupid if they go to see a doctor. Others don't want to talk about their secrets. In order to solve the teenagers'

problems, here is some advice:

     ● Talk to your parents or teachers often.

     ● Take part in group activities and play sports.

     ● Go to see a doctor if you feel unhappy or unwell.

1. Some students became worried because of  _____. 

A. their study

B. their teachers

C. their hobbies

D. their clothes

2. Wu Yan cut her finger with a knife because _____.

A. she was afraid of exams

B. she had no money for a new shirt

C. she could not understand her teachers in class

D. she often argue with her classmates and her parents

3. How many pieces of advice are given to the teenagers who have problems in this passage?

A. Two.

B. Three.

C. Four.

D. Five.

会计电算化不能推动会计技术、方法的理论创新和观念更新。

He told me that he had two girl-friends, neither of _______ knew anything about the other.

A．whom

B．them

C．which

D．who

依据我国特别行政区基本法，下列哪个选项的表述是正确的( )

A．特别行政区的立法不需要报全国人大常委会批准

B．不服特别行政区法院的判决，可以上诉至我国最高人民法院

C．特别行政区可以自主决定外交、经济、财政等事项

D．全国人大常委会可授权特别行政区依照基本法自行处理有关对外事务

银行业金融机构应当严格違守国家关于金融服务收费的各项规定，被露收费项目和标准，不得随意增加收费项目或提高收费标准。