Youmightthinkthatglobalwarming-优题课

How to protect children Web fans from unsuitable material on-line while encouraging them to use the Internet has long been discussed in the US.
For some parents, the Interact can seem like a jungle, filled with danger for their children. But jungles contain wonders as well as danger and with good guides, some education, and a few precautions(预防), the wilds of the Internet can be safely navigated. “Kids have to be on-line. If we tell our kids they can' t be allowed to surf the Internet, we' re cutting them off from their future.”said an expert.
Most kids have started to use search engines. Many of them are great for finding tons of interesting Internet sites, and they can also locate places where you might not want your kids to go. There are search engines designed just for kids. A certain software contains only sites that have been selected as safe. The most popular way would be to use what is known as a “content screener”. But this can't be wholly reliable (可靠), and the best thing parents can do is to talk to their kids and let them know what is OK or not OK to see or do on the Internet. Another way is that mum or dad is nearby when the child is surfing the Internet.
A few other tips:
—Don't put the PC in a child's room but keep it in an area where mum or dad can keep an eye on things. That also makes the Internet more of a family activity.
—Ask your child what he or she has been doing and about any friends they make online.
—Tell your child not to give on-line strangers personal information, especially like address and phone number.
And tell your children never to talk to anyone they meet on-line over the phone, send them any- thing, accept anything from them or agree to meet with them unless you go along.
69. What is the main subject about the passage?
A. Opposing children's on-line. B. Internet in America.
C. American children going on-line. D. Appreciating the Internet.
70. What is the best way to protect children from improper material?
A. To talk to the children and persuade them to tell right from wrong.
B. To be nearby when they are surfing the Interact.
C. To fix a content screener on the computer.
D.To buy some search engines for children.
71. According to the passage, we can infer that
A. softwares fit for children want programmingB. the Internet contains a lot of harmful sites
C. the Internet will be protected by lawD. a child who is on-line is in danger
72. What does the passage tell us most?
A. Education. B. Good guides. C. Precautions. D. Software.

Every human being has a unique (唯一的) arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the cage.
The ridge (脊状) structure on a person's fingers does not change with growth and is not affected by surface injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one which bears a reproduction of the original pattern. It is only when the inner skin is injured that the arrangement will be destroyed. Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take.
Finger-prints can be made very easily with printer's ink. They can be recorded easily. With special methods, identification (识别) can be achieved successfully within a short time. Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case. A suspected man may deny a charge but this may be in vain. His finger-prints can prove who he is even if his appearance has been changed by age or accident.
When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye. Special techniques are used to "develop" them. Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained.
60. Scientists and experts have proved that the pattern of a human being's finger skin
A.is similar to his mother' s
B. is valuable to himself only
C. is like that of others with the same type of blood
D. is different from that of all others
61. If your fingers are wounded by knife, fire or other means, the structure of skin will
A. be changed partly
B. be replaced by a different one
C.be the same when the wound is recovered
D. become ugly
62. Finger-prints have often been used as a method of solving criminal ease. because it
A. is complicated but reliable B. is simple and not expensive
C. is expensive but easy to do D. can bring a lot of money
63. It is __ for a criminal to deny his crime when finger-prints are used to identify him.
A. worth trying B. successful C. useful D. useless

In front of a popular restaurant, a line of customers wait for taxis. And wait. Most of the cabs(taxis) are full. That’s nothing unusual in this city of 4 million people. But it’s 2:30 in the morning.
Visitors to the Olympic Games may leave disappointed if they see Athens only through the eyes of the typical tourist, who makes a beeline of the islands after the visit to the Acropolis(雅典卫城) and the unusual and attractive Plaka district. To fully appreciate and discover Athens’ many charms(魅力), do as the Greeks do: walk out into the neighborhoods, find the packed nightclubs, eat at one of the innumerable(数不清的) restaurants, or see Hollywood stars under real stars in a romantic outdoor cinema.
The Greek capital is named for the ancient goddess Athena, whose favourite animal was the owl(猫头鹰). It’s a fitting symbol for the city’s nocturnal (夜里的) nature, which often reaches its highest point in summer with a rush hour just before dawn.
As native Athenian Panos Demestiha said, Athens by day is unlivable(不宜居住的), but it’s magical at night. Athenians face up to heavy traffic block, decreasing green space, dusty streets… City officials are using the momentum(契机) of the August 13-29 Olympics to fix some of these problems and make city life morebearable.
72. To the surprise of the visitors to Athens , ____.
A．most of the cabs are often full all day long
B. the cabs are often empty
C. the cabs are almost full even at 2:30 am
D. there is no cab in the street at 2:30 am.
73. The name of Athens came from ____.
A. a goddess B. a famous athlete C. a kind of animal D. a kind of plant
74. The typical visitors will often visit the following places EXCEP ____.
A. the neighborhood B. the Plaka district C. the Acropolis D. famous islands
75. The underlined word “bearable” in the last paragraph can be replaced by “____”.
A. astonishing B. forgettable C. exciting D. comfortable

English may not be a world language forever
While 375 million people around the globe use English as their native language, the number of people using it as a second language has already been well over that figure (数字).
It is said that by the end of 2000, one billion people could use English to communicate with others, including both native speakers and non-native speakers.
“The rise and fall of a language is closely connected with that country’s economic(经济的) strength and development potential (潜力).” Rhodri Jones, the English 2000 manager of the ELT group of the British Council said.
An expert who has given many lectures on the future of English said the economic boots（快速发展）in Asia would raise(提高) the position of the Chinese and Hindi languages. Therefore, the English language is facing a serious problem. Where will English turn in the next fifty years or the century?
The recently introduced book from Britain “Future of English” might give people concerned with their question some enlightenments (启发). The book helps to help English teachers, planners, managers and decision makers with a professional interest in the development of English worldwide.
With the book translated into Chinese and to be published soon, the book might be brought to wider sphere (范围)of people.
“From the book, we learn many facts about the English language, and we may be able to predict (预测) its future after reading it.” said Dorothy Humphrey, who used to be a senior English teacher for the British Council.
60.The reason why some language rises in the world depends on _______ .
A. the population of the country
B. the country’s economic strength in the world
C. the number of the population who use it
D. the country’s economic strength and development potential
61. The book “Future of English” helps to _______ .
A. improve the standard of people’s learning English
B. adds to people’s interest toward English
C. emphasize (强调) the importance in the world
D. make people interested in the development of English worldwide
62. After reading “Future of English” we know _______ .
A. English is the language that the people who speak it is the most in the world
B. English may disappear sooner or later
C. the world is keeping changing all the time
D. what the future of the English language is
63. The main idea of the passage is _______ .
A. why English has been popular in the world
B. how to improve people’s ability of learning English
C. English has a bright future
D. the usage of English may become less in the world one day
64. According to this passage, English may not be a world language forever because _______
A. more and more people will come to visit China
B. people in the world won’t like English in the future.
C. the economic boots in Asia would raise the position of the Chinese and Hindi languages
D. China and India will be more developed than those English-speaking countries

Do you love holidays but hate the increase weight that follow? You are not alone.
Holidays are happy days with pleasure and delicious foods. Many people, however, are worried about the weight that comes along with these delicious foods.
With proper planning, though, it is possible to control your weight. The idea is to enjoy the holidays but not to eat too much. You don’t have to turn away from the foods that you enjoy. The following suggestions may be of some help to you.
Don’t miss meals. Before you leave home for a feast (宴会),have a small, low-fat snack. This may help to keep you from getting too excited before delicious foods.
Begin with clear soup and fruit or vegetables.
A large glass of water before you eat may help you feel full.
Use a small plate; a large plate will encourage you to have more than enough.
Better not have high-fat foods. Dishes that look oily or creamy have much fat in them.
Choose lean meat. Fill your plate with salad and green vegetables.
If you have a sweet tooth, try mints(薄荷)and fruits. They don’t have fat content as cream and chocolate.
Don’t let exercise take a break during the holidays. A 20 minute walk after a meal can help burn off excess calories.
68. Holidays are happy days with pleasure but they may ______.
A. bring weight problemsB. bring you much trouble in your life
C. make you worried about your foods D. make you hate delicious foods
69. In order to really enjoy your holidays without putting on weight, you ‘d better ______.
A．drink much water and have vegetables only
B．not eat too much food in high fat
C．not accept invitations to feasts
D．turn away from delicious foods
70. According to the passage, ____ is a necessary part to stop you from putting on weight.
A. vegetables B. water C. calorie of energy D. physical exercise
71. Many people can’t help putting on weight after the holidays because they _____.
A. can’t control themselves B. go to too many feasts
C. enjoy delicious foods D. can’t help turning away from the foods