Enough sleep is important to health. The amount o f sleep needed depends on the age of the person and the conditions in which sleep takes place. The young may need more sleep than the old, but usually eight hours are enough for the health of grown-ups.   Some can do with less than this amount, but others may need more. Every person knows his own need. It is then a matter of good judgement to satisfy his need. Sleep should always be enough to make one bring back his strength and get ready for a day’s
work.
Fresh air is necessary to sound sleep. It is not without reason for some people to think that it is practicable to sleep in the open air. When one can keep himself warm, out-of-door sleeping probably gives the body its most complete relaxation(松弛). Ability to sleep is largely a habit . The conditions referred to only lead to sleep. Out-of-door exercises, a good habit of regular hours and the avoidance(避免) of late eating and worry, which are largely within the control of any person, are all helpful to sound sleep.
A bath at bedtime, neither hot nor cool but of body temperature, may be helpful to sleep. Sleep-producing drug(药）should never be taken except when suggested by a doctor.
【小题1】How many hours are usually enough for the health of a pupil?

Health and climate scientists have mapped how climate change affects different parts of the world in different ways. The scientists point to the fact that changes in the past thirty years may, have been affecting human health. Possible effects include more deaths from extreme(极度的) heat or cold, more storms and more crop failures in dry periods.

The health and climate scientists recently estimated(估计) that climate changes caused by human activity lead to more than one hundred and fifty thousand deaths each year. Cases of sickness are estimated at five million. And the W.H.O. says the numbers could rise quickly by the year of 2003.

Jonathan Patz of an environmental institute led the study. Professor Patz points out that climate scientists connected global warming with the heat that killed thousands in Europe in August, 2003. But he says poor countries least responsible(对……负责) for the warming are most in danger from the health effects of higher temperatures.

Professor Patz says areas in greatest danger include southern and eastern Africa and coastlines along the Pacific and Indian oceans. Also, large cities experience what scientists call a "heat island"effect that can make conditions worse.

Representatives(代表) from about two hundred countries hold a meeting in Canada, to discuss climate change. The ten-day meeting ends on December 9th. It is the first such United Nations meeting since the Kyoto Protocol(京都议定书) took effect earlier this year. The agreement aims to reduce the amount of carbon dioxide(二氧化碳) and other heat-trapping(吸热的) gases sent off into the air.

1.Who is Jonathan Patz?

2.Which of the following statements is TRUE according to the passage?

3.Possible effects from the climate changes include the following EXCEPT ______.

4.According to the health and climate scientists, climate changes have been caused by ______.

5.We can infer from the passage that ______.

1.A high ___________ （比例）of the female staff are part-time workers.

2.American English d___________ from British English in many aspects.

3.His ___(申请)to the company for manager has been refused.

4.The idea o___________ to him in a dream yesterday night.

5.As I ran up the stairs, my foot s___________ and I fell.

6.There will be rain later in c___________ and eastern parts of the country.

7.Shanghai is the __________（商务） heart of the country.

8.We have a___________ a great amount of evidence to accuse the murder.

9.It was _________(显而易见的) from her face that she was really upset.

10.People suffered many ________ (困苦) during that long winter.