1 . Many college students turn to ADHD（注意缺陷障碍）medicine during the exam week, which is regarded as “smart drugs” that will help their academic（学术的）performance. The thinking is that if the drugs help students with ADHD improve their focus, they should provide the same benefit for people who don’t have the disorder.

But a new study shows that drugs can actually damage brain function of healthy students who take the drug hoping to boost their intelligence. “It’s not a smart drug which will suddenly improve their ability to understand information they read,” said Lisa Weyandt, a professor at the University of Rhode Island.

To test whether this effect is real or not, researchers organized 13 students to take part in two five-hour study sessions（一段时间）in the lab. The students took the standard 30mg ADHD drugs before one session, and a sugar pill before the other. Students on ADHD drugs did experience an increase in their blood pressure and heart rates. “The medicine was having an effect on their brain,” Weyandt said. The students also showed an improvement in their ability to focus, the researchers found.

However, students on ADHD drugs experienced no improvement in reading comprehension, reading fluency or knowledge reviews, compared to when they’d taken a sugar pill. “We read aloud stories to them and asked them to recall information from the stories, ”she said. “That didn’t improve.”

Worse, the ADHD drug actually harms students’ memory. It’s often misused because people pull all-nighters and they’re tired, and they think it’s going to keep them awake. Maybe it does, but it’s certainly not going to help their academic work. The brain is still developing until the mid to late 20s. It’s important to keep it healthy. There’s also a chance that ADHD drugs could endanger a student’s heart health.

1. Why do some college students take ADHD drugs?

A．To improve their sleeping.	B．To get higher marks.
C．To make them feel relaxed.	D．To treat brain disorder.

2. Which of the following is closest in meaning to the word “boost” in Paragragh 2?

A．Analyze.	B．Affect.
C．Improve.	D．Understand.

3. What effect did ADHD drugs have on the students in the experiment?

A．They became more focused.

B．Their blood pressure was reduced.

C．Their reading fluency was greatly raised.

D．They could remember better and more quickly.

4. Where can we read this text?

A．In a drug instruction.	B．In a biology textbook.
C．In a travel magazine.	D．In a news report.

2 . Tips for avoiding traffic jams:

The radio has more than just music. Check the local news station for the latest traffic report. Or go online and check traffic cameras before you set out. If there is a jam, you'll be prepared and can try another route.

Take the road less traveled. Although highways may be the most direct route, back roads can be much less crowded, which can save you from the frustration of the stop­and­go traffic.

Rush hour isn't just a lovely nickname. It means the morning and afternoon traffic lasts for several hours, but they're still called “rush hour” for a reason — everyone's on the road and in a hurry to get somewhere. Treat rush hour like bad weather — if you don't have to go anywhere, stay off the roads.

Tips for those unavoidable traffic jams:

Don't break the law. You've gone 30 feet in 30 minutes and all of a sudden you see people using the shoulders (紧急停车道). Don't behave like them. Not only is this illegal, but also there's a good chance they'll get caught or cause even more problems.

Pay extra attention to zig­zaggers (Z字形行进者). When some people are anxious, they may start changing lanes (车道) every 5 seconds or cut you off. Keep checking your windows and mirrors for these lane changers.

Look for an escape. If it is possible to exit the road safely, do it.   Use a GPS unit, and you can change your route mid­trip if needed.

Be courteous. Good manners could help you avoid a possible accident. Allow people in from a lane that is ending. Speeding up to keep them out increases your chances of an accident.

1. To avoid traffic jams, we are advised to do the following EXCEPT ________.

A．getting traffic news before leaving	B．choosing back roads
C．avoiding rush hours	D．changing lanes frequently

2. What should we do when there are zig­zaggers?

A．Keep checking the mirrors.	B．Stop and let them go first.
C．Sound the horn loudly.	D．Drive quickly to keep them out.

3. What does the underlined word “courteous” in the last paragraph mean?

A．Energetic.

B．Polite.

C．Careful.

D．Honest.

4. In which part of a magazine can this passage be found?

A．Entertainment.

B．Life.

C．Market.

D．Advertisement.

3 . Welcome to SummerCamps.com; find and book the very best summer camps. Your children are precious so we offer the highest quality of camps that will meet each child’s needs and interests.

Catalina Sea Camp

Sea Camp offers three one-week sessions to boys and girls aged 8-13 and two three-week sessions to teens aged 12-17. Our hand-picked instructors create an atmosphere of fun and excitement while leading campers to a host of ocean adventures, marine(海洋的) biology, and social summer camp activities.

Address: Toyon Way, San Bruno, California 94066

Phone: 800-645-1423

Camp Cayuga

Camp Cayuga is a private summer camp for children aged 6 to 16. The camp is on a 350-acre land in the Pocono Mountains of Northeast Pennsylvania, just outside the village of Honesdale. It’s a 3-hour drive from New York City to Philadelphia.

Address: 321 Niles Pond Road-Suite ISC, Honesdale, Pennsylvania 18431

Phone: 908-470-1224

Camp Rockmont

Camp Rockmont is a Christian summer camp for boys, aged 6-16, in the Blue Ridge Mountains of North Carolina. Rockmont’s duty of developing boys into healthy young men is accomplished through age-appropriate skills, activities, and challenges that help campers to know themselves better.

Address: 375 Lake Eden Road, Black Mountain, North Carolina 28711

Phone: 828-686-3885

Primitive Pursuits Overnight Camps

Primitive Pursuits Overnight Camps offer week-long Summer Adventure Overnight Camps in New York’s Finger Lakes to your children aged 11-15. Campers experience a week of nature-based skills training, inspiring challenges, and fun activities under the guidance of skilled instructors.

Address: 611 County Rd 13, Van Etten, New York 14889

Phone: 607-272-2292

1. If a boy is curious about sea creatures, which camp should he go to?

A．Catalina Sea Camp

B．Camp Cayuga

C．Camp Rockmont

D．Primitive Pursuits Overnight Camps

2. Where should a girl of 7 go for camping?

A．Toyon Way, San Bruno.

B．611 County Rd 13, Van Etten.

C．375 Lake Eden Road, Black Mountain.

D．321 Niles Pond Road- Suite ISC, Honesdale.

3. You can find this passage from           .

A．a magazine	B．the Internet
C．a textbook	D．a newspaper

4 . The third-generation hybrid rice（杂交水稻）which was developed by Yuan Longping, the "father of hybrid rice", and his team ran its first public yield（产量）monitoring from Monday to Tuesday and achieved high output. The final yield of the tested variety, G3-1S/P19, came to1046.3 kg per mu（about 667 square meters）, based on two pieces of land in Qingzhu Village under the city of Hengyang in central China's Hunan Province.

"Some previous high-yielding hybrid rice varieties in China took 160 to even 180 days from sowing（播种）to harvesting, while the figure was shortened to around 125 days for the new variety. This is one of the most important features（特征）of the third-generation hybrid rice that can reduce the use of pesticides（杀虫剂）and fertilizers（化肥）, thus reducing cost and improving production efficiency." said Qian Qian, the deputy director of the China National Rice Research Institute.

Unlike the previous two generations that required a large amount of water and fertilizers as well as demanding growing conditions and technological support, the third-generation hybrid rice is easier to be cultivated（种植）by ordinary farmers. So the soil, altitude and climate of the test site were not "ideal conditions" carefully selected beforehand but were close to the paddies（稻田）of ordinary farmers.

Nowadays. China's average yield of rice is about 500 kg per mu. Ordinary farmers can produce 600 kg to 700 kg of rice per mu by growing some excellent second-generation hybrid rice varieties. However, under the same planting conditions and environment, the yield of the third-generation hybrid rice could reach 800 kg per mu. China now feeds around 20 percent of the world's population with less than 9 percent of the world's arable（可耕种的）land.

At present, Yuan's team has nine third-generation hybrid rice combinations under trial, which are expected to achieve commercial seed production in the following three to four years and hope to apply the technology into the research of sea rice. The third-generation hybrid rice has the comprehensive strength to promote a greener and more sustainable development of China's rice production with higher quality and yield.

1. What feature of the new hybrid rice does Qian Qian mainly talk about?

A．It saves a lot more water.	B．It achieves a higher yield.
C．It saves much more farmland.	D．It has a shorter growing period.

2. Why is the new hybrid rice not tested in ideal areas?

A．The ordinary farmers master planting technology.

B．The researchers want to reduce the experiment cost.

C．The growing conditions the new hybrid rice needs are simple.

D．The previous rice farming provides researchers with experience.

3. What is the fourth paragraph mainly about?

A．The high output of the third-generation hybrid rice.

B．The future of the new hybrid rice variety.

C．The advanced technology of the research on hybrid rice.

D．The differences between the three hybrid rice varieties.

4. Where is this text most likely from?

A．A guide book.	B．A news report.
C．An advertisement.	D．A fashion magazine.

5 . The baby is just one day old and has not yet left hospital. She is quiet but alert (警觉的). Twenty centimeters from her face researchers have placed a white card with two black spots on it. She stares at it carefully. A researcher removes the card and replaces it by another, this time with the spots differently spaced. As the cards change from one to the other, her gaze(凝视) starts to lose its focus—until a third, with three black spots, is presented. Her gaze returns: she looks at it for twice as long as she did at the previous card. Can she tell that the number two is different from three, just 24 hours after coming into the world?

Or do newborns simply prefer more to fewer? The same experiment, but with three spots shown before two, shows the same return of interest when the number of spots changes. Perhaps it is just the newness? When slightly older babies were shown cards with pictures of objects (a comb, a key, an orange and so on), changing the number of objects had an effect separate from changing the objects themselves. Could it be the pattern that two things make, as opposed to three? No again. Babies paid more attention to squares moving randomly(随意地)on a screen when their number changed from two to three, or three to two. The effect even crosses between senses. Babies who were repeatedly shown two spots became more excited when they then heard three drumbeats than when they heard just two; likewise(同样地) when the researchers started with drumbeats and moved to spots.

1. The experiment described in Paragraph 1 is related to the baby's ________.

A．sense of hearing	B．sense of sight
C．sense of touch	D．sense of smell

2. Babies are sensitive to the change in ________.

A．the size of cards	B．the colour of pictures
C．the shape of patterns	D．the number of objects

3. Why did the researchers test the babies with drumbeats?

A．To reduce the difficulty of the experiment.

B．To see how babies recognize sounds.

C．To carry their experiment further.

D．To keep the babies' interest.

4. Where does this text probably come from?

A．Science fiction.	B．Children’s literature.
C．An advertisement.	D．A science report.