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Yesterday I stepped into a restaurant for lunch. As I was waiting my order to come, I noticed the old man in a wheelchair roll himself over to a table. No one and me seemed to notice him. I got up and go over to his table and asked if that I could get him something to drink. He smiled and said," Thank you. You are generously. I'd like any orange juice, please."When I was getting ready to leave, I walked by the old man's table to saying goodbye. He thanked me again and told me I had made his days, coming over and helping him out. I gave him a hug and told him he had made my day, either.

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Winter begins in the north on December 22nd. People and animals have been doing what they always do to prepare for the colder months. Squirrels (松鼠), for example, have been busy gathering nuts from trees. Well, scientists have been busy gathering information about what the squirrels do with the food they collect.

They examined differences between red squirrels and gray squirrels in the American state of Indiana. The scientists wanted to know how these differences could affect the growth of black walnut (黑胡桃) trees. The black walnut is the nut of choice for both kinds of squirrels. The black walnut tree is also a central part of some hardwood forests.

Rob Swihart of Purdue University did the study with Jake Goheen, a former Purdue student now at the University of New Mexico. The two researchers estimate that several times as many walnuts grow when gathered by gray squirrels as compared to red squirrels. Gray squirrels and red squirrels do not store nuts and seeds in the same way. Gray squirrels bury nuts one at a time in a number of places. But they seldom remember where they buried every nut. So some nuts remain in the ground. Conditions are right for them to develop and grow the following spring. Red squirrels, however, store large groups of nuts above ground. Professor Swihart calls “death traps for seeds”.

Gray squirrels are native to Indiana. But Professor Swihart says their numbers began to decrease as more forests were cut for agriculture. Red squirrels began to spread through the state during the past century.

The researchers say red squirrels are native to forests that stay green all year, unlike walnut trees. They say the cleaning of forest land for agriculture has helped red squirrels invade Indiana. Jake Goheen calls them a sign of an environmental problem more than a cause.

1.The study done by Rob Swihart and Jake Goheen is to ________.

A. find out the living conditions for squirrels

B. learn squirrels’ influence on black walnut trees

C. do something to get rid of squirrels

D. save the forests in the American state of Indiana

2.The difference between gray squirrels and red squirrels mainly lies in ________.

A. the way they gather the walnut

B. the time they have winter sleep

C. the place they have winter sleep

D. the place they store the walnuts

3.When Professor Swihart says “death traps for seeds”, he actually means that ________.

A. red squirrels eat more nuts than gray squirrels

B. gray squirrels and red squirrels will have severe fights

C. nuts above the ground will not develop into plants

D. seeds can be traps for other animals in the forest

4.According to the passage, which of the following is true?

A. The black walnut is equally attractive to both gray and red squirrels.

B. Gray squirrels do more harm to the forest than red squirrels.

C. Red squirrels and gray squirrels have helped the spread of walnut trees.

D. The cleaning of forest land benefits red squirrels directly.

Our library offers different types of studying places and provides a good studying environment.

Zones

The library is divided into different zones. The upper floor is a quiet zone with over a thousand places for silent reading, and places where you can sit and work with your own computer. The reading places consist mostly of tables and chairs. The ground floor is the zone where you can talk. Here you can find sofas and armchairs for group work.

Computers

You can use your own computer to connect to the wi-fi specially prepared for notebook computers; your can also use library computers, which contain the most commonly used applications, such as Microsoft Office. They are situated in the area known as the Experimental Field on the ground floor.

Group-study places

If you want to discuss freely without disturbing others, you can book a study room or sit at a table on the ground floor. Some study rooms are for 2-3 people and others can hold up to 6-8 people. All rooms are marked on the library maps.

There are 40 group-study rooms that must be booked via the website. To book, you need an active University account and a valid University card. You can use a room three hours per day, nine hours at most per week.

Storage of Study Material

The library has lockers for students to store course literature. When you have obtained at least 40 credits(学分), you may rent a locker and pay 400 SEK for a year’s rental period.

Rules to be Followed

Mobile phone conversations are not permitted anywhere in the library. Keep your phone on silent as if you were in a lecture and exit the library if you need to receive calls.

Please note that food and fruit are forbidden in the library, but you are allowed to have drinks and sweets with you.

1.The library’s upper floor is mainly for students to .

A. read in a quiet place B. have group discussions

C. take comfortable seats D. get their computers fixed

2.Library computers on the ground floor .

A. help students with their field experiments

B. contain software necessary for schoolwork

C. are for those who want to access the wi-fi

D. are mostly used for filling out application forms

3.What condition should be met to book a group-study room?

A. A group must consist of 8 people

B. Three-hour use per day is the minimum

C. One should first register at the university

D. Applicants must mark the room on the map

4.A student can rent a locker in the library if he .

A. can afford the rental fee B. attends certain courses

C. has nowhere to put his books D. has earned the required credits

Well, parents, surprise! Lots of us are using Twitter and Facebook to thumb rides, and not just to school. It’s awkward to be refused when you call a friend and ask for a ride. But with Twitter, you just look for other people heading the same way.

It may sound risky, so many teens stay within their own social circles to find rides, and don’t branch out beyond friends when asking on Twitter just like me, but to some young people, especially those taking longer trips, stranger danger is less of a concern.

“I think the digital connection of young people is really important, because younger generations grew up sharing things on line, sharing files, photos, music, etc, so they’ve been very used to sharing,” said Juliet Schor, a sociology professor at Boston College.

The sharing economy got big during the recession (经济衰退), allowing people to access more goods, services using technology and even to share costs. And that technology, for me, is what the car was for my mom, a gateway to more freedom, like what my friend Earl says, “The symbol of freedom isn’t the car any more because there’s technology out there connecting you to a car.”

According to the researchers at the University of Michigan, 30 years ago, eight in ten American 18-year-olds had a driver’s license compared to six in ten today. So it’s not that surprising that on my 16th birthday I wasn’t rushing to get a license but an iPhone.

“Driving, for young people, does mean they have to disconnect from their technology, and that’s a negative. So if they could sit in the passage side and still be connected, that’s going to be a plus.” Schor continued.

To me, another plus is that ridesharing represents something, something much bigger than trying to save money. I see it as evidence that people still depend on each other. My generation shares their cars and apartments the way neighbors used to share cups of sugar. For the system to work, some of us still need our own cars. But until I get my own version of the silver Super Beetle, you can find me on Twitter.

1.The American teens prefer to possess an iPhone as a birthday gift because ______.

A. it is most fashionable and cool B. they are bored with driving cars

C. they are fond of being connected D. it is much cheaper than a car

2.We can learn from the text that ______.

A. Twitter is a website for teens to make friends and achieve goals

B. ridesharing can be seen as a sign that people still count on each other

C. drwing cars for teens means a plus and connecting with technology

D. having a car and cost-sharing symbolize more freedom for the author’s mother

3.Professor Juliet would agree that ______.

A. young people will sit waiting to be contacted by reading a passage

B. sharing economy is bound to be responsible for the recession

C. young people tend to share a car with strangers by means of Twitter

D. being connected via technology comes first for young people

4.The best title for the passage is probably ______.

A. Twitter, an Awesome Website B. Cars or iPhone

C. Teens Use Twitter to Thumb Rides D. Cool Teens on the Go

How to protect children Web fans from unsuitable material on-line while encouraging them to use the Internet has long been discussed in the U. S.

For some parents, the Internet can seem like a jungle, filled with danger for their children. 1. With good guides, some education,and a few precautions(预防措施), the wilds of the Internet can be safely navigated(航行). “Kids have to be on-line. If we tell our kids they can’t have access (机会) to the Internet, we’re cutting them off from their future,” said an expert.

Most kids have started to use search engines. 2. There are search engines designed just for kids. A certain software contains only sites that have been selected as safe. 3. 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.

4.

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 on-line.

5.

● And tell your children never to talk to anyone they meet on-line over the phone, send them anything, accept anything from them or agree to meet with them unless you go along.

A. The most popular way to limit access would be to use what is known as a “content screener(过滤器)”.

B. 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.

C. Tell your child not to give on-line strangers personal information, especially like address and phone number.

D. But jungles contain wonders as well as dangers.

E. Tell your child not to talk to any strangers.

F. Another way is that mum or dad is nearby when the child is surfing(浏览) the Internet.

G. And also parents can help the child in trouble.

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