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“I sometimes get up at three or four in the morning and I surf the net.”
“I often check my e?mail forty times a day.”
“I often spend more than three hours during one time on the net.”
“I spend more time in chat rooms than with my real?life friends.”
Do you know any people like these? They are part of a new addiction called Internet addiction.Internet addicts spend at least thirty to forty hours online every week.The use of the Internet can be an addiction like drug use.People lose control of the time they spend on the Internet.
For example，one college student was missing for several days.His friends were worried，and they called the police.The police found the student in the computer lab: he was surfing the net for several days straight.
Studies show that about 6% to 10% of Internet users become addicted.And people worry about the teens because the Internet is changing the playing field for some of them.They spend more time in cyberspace than in the real world of friends and family.
Is “surfing the net” a hobby or an addiction for you? You may have a problem if you have these symptoms：
?You do not go to important family activities or you do not do school work because you like to spend hours on the Internet.
?You can’t wait for your next online time.
?You plan to spend a short time online，but then you spend several hours.
?You go out with your friends less and less.
1.What does the beginning of the passage tell us?
A.How to become an Internet addict.
B.What an Internet addict usually does.
C.Where to find an Internet addict.
D.Why to write this passage.
2.How does the writer describe the addicts’ use of Internet?
A.It is something like keeping drugs.
B.It is a way of producing drugs.
C.It is like taking drugs.
D.It is terrible to imagine.
3.Why do people worry about the teens?
A.Because the teens are wasting too much money.
B.Because they used to work on the Internet.
C.Because the playing field of the teens will disappear.
D.Because more and more of the teens will become addicted to the Internet.
4.The example in the passage shows that .
A.Internet problems are more serious among college students
B.Internet addicts usually stay in the computer lab without sleep
C.some of the Internet users have already been seriously addicted
D.the police often help to find those Internet addicts
5.What is the writer trying to tell us at the end of the passage?
A.Don’t be addicted to the Internet.
B.Go to family activities more often.
C.Do things as you have planned.
D.Stay with your parents as often as possible.
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根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Early Childhood EducationEarly childhood education is the formal(正规的)teaching and care of young children．It primarily focuses on learning through playing to encourage the child's different kinds of development． 1
Studies with Head Start programs throughout the United States have shown some evidence that there are quite a few advantages to early childhood education, which can produce significant gains in children's learning and development．Compared to a child who does not attend pre-school, children completing their early education programs are found to be better at math and reading skills．They are excited to learn and have the tools to do so． 2 These children are more competent in their pre-school, kindergarten and school-age years, and they are usually reported as “friendlier” by parents and the children's peers(同伴)．
3 In studies with matched control groups, more students who had early schooling experiences were employed at the age of 19, fewer were on welfare, and fewer were involved with the criminal activity．What's more, some studies show that children attending pre-school are more likely to graduate and have higher education, and be well integrated(综合)as an adult．
Early childhood education gives most children a jump-start on education for their kindergarten and primary school years．It is clear that early childhood education can have some great benefits for children． 4 If early childhood education is less effective, perhaps the best model is finding strategies for allowing a parent to stay home with his or her child for at least the first two to three years．Also important is considering a child's own personality． 5
A．The long-term influence of early education is significant as well．
B．They can benefit greatly from encouragement in their early childhood．
C．Yet its quality must be assessed to see what kind of benefits it actually provides．
D．They are also able to relate to others in a superior way and that improves their social skills．
E．Many experts of education have concerned about what early childhood education means today．
F．Individual differences in children mean that not all children will get equal benefits from early childhood education．
G．It consists of activities that serve children in the pre-school years and is designed to improve later school performance．
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Talking plants might sound like characters in a fairy tale. But recent scientific studies have shown that plants communicate with each other and with other living things in a surprising number of ways. To understand them, scientists say, we just have to learn their language. Farmers are especially interested in what plants have to say.
“Plants are able to communicate with all sorts of organisms (有机体). They can communicate with giant bacteria, with other plants and with insects. They do this chemically,” said Cahill, an Ecology Professor of the University of Alberta in Canada.
Plant scientists are just beginning to understand this chemical “ language”. Cahill says studies have shown, for example, that plants can evaluate conditions in their immediate environment and take appropriate actions. Plants have an ability, for example, to signal pain or discomfort caused by anything from temperature extremes to an insect attack. Jack Schultz, a professor of chemical ecology at the University of Missouri, says when a plant senses that it’s being eaten, it cannot walk away from trouble; on the contrary, it will release a chemical vapor that alerts other plants nearby.
“Their language is a chemical language, and it involves chemicals that move through the air that are easy to be changeable, and most of all are smells that we are familiar with,” Schultz explained.
“All plants responded to the attack by changing their chemistry to defend themselves,” Schultz recalled.“But we were quite surprised to find that nearby plants also changed their chemistry to defend themselves, even though they were not part of the experiment.”
Studies have also shown that plants under attack release pleasant chemicals. Those chemicals attract friendly insects that attack the pests eating the plant.
In the end, plants’ ability to communicate their needs---and our ability to understand them--- could help farmers reduce the use of poisonous chemicals, cut operating costs and limit damage to the environment.
55. The recent scientific studies have shown that plants can _________.
A. communicate with other living things in a chemical way
B. hardly react to any sudden change in temperature
C. use a very special chemical language which is familiar to us
D. respond to the attack by giving off poisonous chemicals
56.When being eaten by an insect, the plant will _________.
A. walk away from trouble
B. change its chemistry to kill the insect
C. release a chemical vapor to “ask” other plants for help
D. give off nice chemicals to attract friendly insects killing the pest
57.The underlined word “alert” most probably means “_________”.
A. warn B. protect C. threaten D. allow
58. Which would be the best title for the passage?
A. Communication between Plants B. A Chemical “Language”
C. Plants Can Talk D. How Plants Protect Themselves
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