16．The writer is talking about ．
A．hot water B．cold water
C．basins D．an experiment（试验）
15．Liang Yuezbu's advice tells us that ．
A．it's better for the students who have mental problems to join others
B．it's unnecessary for them to be with others
C．only group activities and sports can help them
D．teachers and parents can’t do anything about mental problems
（D）
Take three basins（盆）．Fill tile first basin with water which is as hot as you are able to bear（承受）with your hands．In the second basin mix hot water with cold water．Fill the third basin with cold water from the tap（自来水管）．
Now place the basins on the table．Put your right hand in the hot water．Put your left hand in the cold water．You will find that your right hand feels hot and your left hand feels cold．After twenty seconds move both your hands into the lukewarm（微温的）water．What do you feel? Your left hand feels warm and your right hand feels cold．But both hands are in the same basin of water．
1 4．Students who have problems won't ask others fob help because ．
A．they won't let others think they are stupid
B．they don't think doctors can help them
C．they don't want to tell their secret to others
D．both A and C
13．Yiang Fang's problems happened whenever ．
A．she studied very hard B．she had exams
C．she talked with her parents D．she thought of something
12．Liu Wei cut his finger with a knife because ．
A．he was afraid of his teacher
B．he wanted to frighten Ibis parents
C．he is so worried about his studies
D．his finger was badly hurt
11．The students who often become worried or have trouble getting on with others may have ．
A．mental problems B．a headache
C．knives with them D．no parents
10．Which of the following is the best title（标题）for this passage?
A．How to Kill Rats
B．Newtown―City of Rats
C．How Newtown People Became Rich
D．How Newtown Became a Very Clean Place
（C）
Young people 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．Liu Wei，a Junior 2 student from Helei，could not understand his teacher and was doing badly in his lessons．He became so worried about it that he started to cut his finger with a knife． Another student，14-year-old Yan Fang from Guang zhou，was afraid of exams．She got very worried in one，and when she looked at the exam paper．She couldn't think of anything to write．
A recent report from Jiefang Daily says about l 8％of Shanghai teenagers have mental（心理的，精神的）problems．Their troubles include（包括）being worried and very unhappy，and having problems in learning and getting on with people．Many students who have problem s won't go for advice（劝告）or help．Some think they will look stupid（愚蠢）it。they go to see a doctor．Others don't want to talk about their secret．Liang Yuezhu，all expert on teenagers from Beijing Anding Hospital has the following advice for teenagers：
*Talk to your parents or teachers often
*Take part in group activities and play sports
*Go to see a doctor it you feel unhappy or unwell
9．From the passage we can see that the government officer ．
A．was a very rich man B．was clever
C．was afraid of rats D．liked to live in a clean house
8．A deep hole was dug so that ．
A．the rats could not come out to attack people at night
B．people could take as many rats from the hole as they wished
C．the rats could not run away easily
D．nobody could take any rats from the pile
7．The people killed rats ．
A．to get some money for the dead bodies
B．because the rats attacked them at night
C．to help the government make the city clean
D．to pay the government as a tax（税）