Many people say that laughter is the best medicine. Scientists begin to agree with this. They are studying laughter seriously and finding it is really good. One minute of laughter is the same as forty-five minutes of relaxation(放松). Many doctors around the world believe that laughter helps us get better when we are sick.
Of course, there are many kinds of laughter. We may change the way we laugh in different situations(情形). But we all have a laugh that is special to us. How do you usually laugh?What do many people think of laughter?
A. They think it’s bad for our health
B. They think it’s the best medicine
C. They think it’s not the best medicineLaughter is good because________.
A. scientists think so
B. everybody says so
C. everyone is happyOne minute of laughter equals(等于) forty-five minutes of_____
A. rest B. exercise C. playingMany doctors believe that laughter can help us____ when we are ill.
A. feel worse B. get better C. get sad According to(根据) the passage,______.
A. people laugh in the same way
B. we need to laugh forty-five minutes every day
C. everyone has his own way of laughing
Many people like eating meat so much that they can't enjoy a single meal without it． After seeing a new study， they may want to change their eating habits．
Scientists at the Harvard School of Public Health have found that having too much red meat can cause a higher risk of early death． These "dangerous" meats are the ones that look red before they're cooked， such as pork， beef and rabbit． Scientists published the study results in a medical magazine．
The scientists studied the eating habits and health of more than 110，000adults for more than 20years． They did a survey on their diets every four years． During the 20years of research， almost 24，000people died， including 5，910from heart disease and 9，464from cancer．
Scientists examined different lifestyle factors（因素），including age， weight， physical activity and family history of heart disease． They also studied the amount of different foods they ate， such as corns， fruits， vegetables and fish．
The results showed that eating one meal a day of cooked red meat was connected with a 20percent higher risk of early death．
"The message we want to communicate is it would be great if you could lower your intake of red meat to half a serving（一份）a day or two to three servings a week，"the study's lead author， An Pan told the USA Today．
51． From Paragraph 1， we know that ．
A． eating meat is bad for health
B． some people eat meat for almost every day
C． the new study is about the eating habits of some people
52． According to the text， what do we know about the study？
A． It took the scientists more than 20years．
B． Almost 24，000people died from heart disease．
C． The scientists did the survey every five years．
53． The purpose of this study is to ask people to ．
A． eat less red meat
B． change their lifestyle
C． cook red meat in healthy way
54． If you have half a serving of red meat a day or two to three servings a week， you will ．
A． get ill
B． put on weight
C． lower the risk of early death
55． This text is ．
A． a story
B． a science report
C． an advertisement
Thousands of years ago， Shennong， who had an ox（牛）head and human body， lived in the south of ancient China． Seeing that local people were suffering from disease， he built ladders（梯子）and houses on a high mountain to store medical plants． To remember him， people named the place Shennongjia．
The story makes Shennongjia in Hubei an inviting place for tourists． Traveling there is a quite different experience， as you can see sceneries（风景）of the four seasons from different height．"When the bottom of the mountain is summer， the top is spring and while the foothill is autumn， the top is covered with ice，" local people say of the special climate of Shennongjia．
Shennongjia is also home to 5，000kinds of animals and plants． Many rare animals live there， such as the golden monkey and the Asian black bear．
One intersting thing about Shennongjia is its story of wild men． Some people said that they saw big foot marks． Yet so far， scientists haven't proved（证实）it is true and some say they are just bears．
The beautiful place has recently received a new title． It was added to United Nations World Heritage（遗产）list as a natural site． China now has 50world heritage sites， only less than Italy in the world．
46． According to Paragraph 1， Shennong ．
A． had an ox body
B． grew medical plants for people
C． helped people with illness
47． In Shennongjia， ．
A． there are 50，000kinds of animals and plants
B． people can experience four seasons up the mountain
C． people can climb ladders and get to the houses on a high mountain
48． " rare animals" are animals which are ．
A． big and dangerous
B． smart and expensive
C． not often seen
49． Scientists are not sure about ．
A． the story of Shennong
B． the truth of wild men in Shennongjia
C． the number of animals and plants in Shennongjia
50． Which of the following countries has the most world heritage sites？
A． Italy．
B． China．
C． The US．
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44． When will the walk begin？ B
A． At 10：00am．
B． At 10：30am．
C． At 11：00am．
45． From this text， we know that A ．
A． the walk is 5kilometers
B． the walk lasts for a month
C． children don't need to pay
41． Book signing means ．
A． 预订书
B． 签名售书
C． 打折书
42． What is the book about？
A． The life of Dr． Aaron．
B． How to work in the field．
C． The ants of New England．
43． Linda bought the book in June， so she saved ．
A． ＄3.00
B． ＄29.95
C． ＄56.90
Most people drink tea in the world．But tea does not mean the same thing to different people．In different countries，people have different ideas about drinking tea．
In China，for example，tea is often served when people get together．Chinese people drink it at home or in tea houses at any time of the day．They often use hot water to boil tea leaves．
Tea is also important in other Asian countries．People in these countries have a special way of serving tea．They hold a tea ceremony in their houses when important guests come．It is very old and fail of meaning．Everything must be done in a special way in the ceremony．There is even a special room for it in their houses．
In the United States，people usually drink tea at breakfast or they drink it after meals．Americans usually use tea bags to make tea．This way is faster and easier than the way of making tea in teapots．In summer，most Americans drink iced tea．They like to put some ice in their tea．
61．Do most people drink tea in the world？
62．What do Chinese people often use to boil tea leaves？
63．When do people usually drink tea in the USA？
64．What kind of tea do most Americans drink in summer？
65．What does the underlined word "It" mean？ ．
