When baby turtles first come out of eggs, they head to the sea by nature. The beach surface goes down, which is one directional clue they follow. Another is light: The horizon (地平线) over the sea is brighter than the horizon over land.
But lights from towns and beach developments can confuse the baby turtles. The sky shining above a city can mislead them to wander. And particularly bright lights can draw them away from the sea.
You’d think the extra time crawling (爬行) might wear out baby turtles, which need energy once they get in the water to swim for about a day to get to their destination in the sea. In a normal trip from nests to waves, the babies build up chemicals that show they have been pushing themselves.
Some researchers took the baby turtles to a lab, where they ran on a treadmill and swam in a tank while their blood and breathing were monitored. The finding is surprising: even after hours of crawling, the turtles were fine by all measures and swam as well as turtles that didn't have an extra crawling period.
The reason is that they often stop while crawling if they are doing U for a long time, unlike the disturbed trip they make when heading straight to the water. So misled turtles are not worn out.
But the misleading lights are still a problem for the babies. The longer they spend on the beach wandering, the more they are exposed to natural enemies. They can also end up losing their lives in the heat of the sun.
1.What attracts the baby turtles away from the sea?
A.Bright lights. B.Vast beaches.
C.Buildings in cities. D.Noises from towns.
2.What does the underlined word “they” refer to in paragraph 3?
A.Chemicals. B.Nests.
C.Waves. D.Baby turtles.
3.Why don’t the baby turtles feel exhausted after long crawling?
A.They travel by night. B.Their trip is undisturbed.
C.They take frequent breaks. D.They are refreshed by city lights.
4.What may happen to the baby turtles exposed to misleading lights?
A.They are in great danger.
B.They avoid their natural enemies.
C.They will wander on the beach for a while.
D.They are more likely to find the destination.
难度: 中等查看答案及解析
Every man dreams of having a good car. With luxury cars, like Bentley, Lamborghini and Rolls-Royce, going into the world of SUVs, if you have deep pockets, you will be spoilt for choice.
◆Lamborghini Aventador SVJ
Using a new aerodynamic system allows it to set a car lap record of 6: 44 97 at Nurburgring, one of the longest and most challenging circuits in the world. Plus, carbon fiber can be seen everywhere, which makes the car strong and lightweight. There’re only 900 being built and you’11need to cough up $517, 770 to buy one.
◆Aston Martin DBX
The DBX is Aston Martin’s maiden SUV product. It features a choice of two gas engines—a 4.0-liter V8 from Mercedes and a 5.2-liter V12 from its own. The price is predicted to be around $250, 000.
◆Audi E-tron
Being an eco-friendly motoring. it is an all-electric SUV that makes up for its rather ordinary appearance with design, luxury and technology. At the front and back are electric motors which insure progress is rapid. In addition to plenty of storage space, the Audi E-tron provides side cameras instead of side mirrors and air suspension that adapts to the terrain (地 形). Hand over $74, 800 and it’s yours.
◆Tesla Roadster
Tesla Roadster will turn most heads, Zero to 60 in 1.9 seconds means it will leave most cars for dust. The top speed is 250 mph, which is also unheard of for most cars—let alone an a11-electric one. Having advanced autonomous driving systems and a huge touchscreen for surfing the Internet, it won’t make you regret for paying $200, 000.
1.What’s special about Lamborghini Aventador SVJ?
A.It offers two gas engines. B.It is an all-electric SUV.
C.It uses lightweight materials. D.It has the most challenging circuit.
2.Which car is suitable if you want one with adaptable air suspension?
A.Lamborghini Aventador SVJ. B.Aston Martin DBX.
C.Audi E-tron. D.Tesla Roadster
3.Which of the following does Tesla Roadster provide?
A.Self-driving systems. B.A gas-saving engine.
C.Side cameras. D.Much storage space.
难度: 简单查看答案及解析
The bus screamed to a stop in Nazareth, Israel. Five Australian backpackers boarded and struck up a conversation with me. They asked typical travelers’ questions—where was I going and why was I traveling alone? My plan was to travel with a friend of a friend, I explained, but when I called her that morning, she didn’t pick up and I had no other way to reach her. My stomach was in knots, but I decided to head out anyway, thinking I might run into her if I traveled to Tiberius, where we had planned to go together.
“Why don’t you travel with us?” one of the backpackers offered. They were experienced adventurers who would work for a few months, save, then travel for as long as they could. Their current plan was to explore the Middle East and Europe in three months while working in London.
It seemed risky to travel with strangers, but my instinct said yes. For the next two weeks, I explored Israel with the backpackers and learned to trust my instincts in all types of new and interesting situations. When they hook a ride, I took the bus, but when they wanted to steal into the King David Hotel’s swimming pool, I led the way. The world opened up to me because I chose to travel alone. I joined complete strangers, who become close friends. Years later, one couple from the backpacking group even flew from Sydney to Phoenix to be in my wedding. The trip was such a special experience that it gave me confidence in all areas of my life. Since then, I’ve backpacked alone across South Africa, sky-dived from 12,000 feet in New Zealand and even moved across the U.S. with no job lined up.
On my third day wandering in Israel with my new friends, I bumped into the woman I was supposed to meet. Though I was happy she was all right, I was grateful she hadn’t picked up the phone.
1.By “My stomach was in knots” (in paragraph 1), the author most likely means that she was ______.
A.sick of riding on a bumpy bus B.nervous of meeting strangers
C.upset about the sudden change D.sorry about the impractical plan
2.Which of the following best describes the backpackers the author met?
A.Courageous but disrespectful. B.Jobless and poorly educated.
C.Warmhearted and trustworthy. D.Homeless but lighthearted.
3.The author’s sixth sense told her that ______.
A.she would get along with the backpackers B.it might cause trouble to have a swim
C.she ought to stay away from the backpackers D.it could add excitement to get a free ride
4.What can be inferred from the passage?
A.Most of the backpackers became the author’s lifelong friends.
B.The author gathered the courage to be a fulltime backpack traveler.
C.The woman missed the phone call with the purpose of traveling alone.
D.The author considered it the best decision of her life to travel on her own.
难度: 中等查看答案及解析
Music is not just a set of sounds and rhythms. Its influence on the brain is much deeper than any other human experience. Keep on reading to know all those amazing powers of music.
A recent study suggests that preterm (早产的) babies appear to experience less pain and feed more when listening to music. Experts led by Dr. Manoj Kumar of the University of Alberta, Canada, found that music had a beneficial effect on reducing pain for preterm babies experiencing painful medical tests. It also appeared to benefit full-term babies during operations.
Many people experiencing brain damage have speech and movement-related problems. Music can help recover from brain injuries. As a different and effective treatment, doctors often advise such patients to listen to good music to improve the parts of the brain responsible for these two functions. When people with neurological (神经的) disorders hear a musical beat, it helps them to regain a balanced walk.
Though music cannot make deafness disappear, it really can stave off the loss of hearing. There was an experiment involving 163 people where 74 were musicians. Participants were asked to pass some listening tests. Musicians heard the sounds better than non-musicians, and this difference gets clearer with age. This means that a 70-year-old musician hears better than a 50-year-old non-musician, even in a noisy environment.
Besides, music mends a broken heart. It is not about a thrown-away love, but about a heart attack. The matter is that music can help people recover from a heart attack or heart operation by reducing blood pressure, slowing down the heartbeat rate, and reducing anxiety. Listening to the quality music produces positive emotions, improves the movement of blood, and expands blood vessels, thus, promoting quick recovery of the whole cardiovascular (心血管的) system.
1.How does music affect preterm babies?
A.It helps reduce their pain.
B.It helps develop their potential in music.
C.It helps improve their hearing systems.
D.It helps repair their neurological systems.
2.What does the underlined phrase “stave off” in Paragraph 4 mean?
A.Lead to
B.Increase
C.Prevent
D.Break into
3.Why can music mend a broken heart?
A.It has a positive effect on human body systems’ work.
B.It can help people prevent diseases caused by anxiety.
C.It helps make a person feel optimistic about life.
D.It can help patients recover in a slow way.
4.What may be the best title for the text?
A.Who can benefit from music
B.The best time to listen to music
C.The way to choose quality music
D.How music affects our mind and body
难度: 中等查看答案及解析
阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。 续写的词数应为150左右。
We were three thousand miles away from home on a Random Acts of Kindness and Volunteerism Road Trip. We were short of money, so we had two goals today:
1. Try out our new “Smile!” signs and see how much kindness and joy we could spread in Pike Place Market.
2. Raise at least $80 by doing street performances. Singing, drawing or storytelling. This would be enough for gas to Portland and a small hotel room.
We weren’t sure how people would react to our signs. It’s so easy to walk past a busy crowd, lost in your own world, refusing to make eye-contact with strangers, and feeling alone despite being surrounded by hundreds of people just like you. Finally, I gathered courage to raise our signs and shouted, “Hi here!” to a young couple. They looked over, confused for a moment,read my sign and broke into smiles. Then we saw more smiling faces in the crowd.
Before long, our signs were wildly popular. Tourists wanted photos with us. Strangers stopped to ask us about our signs. We told them the story of our acts of kindness road trip and listened to their stories,too.
Sometimes I’d see unfriendly faces and feel particularly nervous to show them my bright sign. But I was always rewarded with a big smile whenever I did so. Suddenly they were no longer faces of strangers but those of neighbors and friends. This world is full of good people we just don’t know yet. We got so wrapped up in our wonderful “Smile! ” project that we forgot the other goal. Before we knew it,the sun was setting,and we had no money for our trip to Portland.
Paragraph 1: We sat down to watch a musician play the guitar while we thought about our second goal. _________________________________________________________________________
Paragraph 2: Our little band of five attracted a large audience.__________________________________________________________________
难度: 中等查看答案及解析
I still remember my first time going to the Chinese company's canteen. When I stepped onto the elevator, each one was full of people. 1. However, there was no sign of fire and people were laughing and talking. I followed the flow of the crowd to the doors of the canteen. It occurred to me that in China everyone has lunch almost at the same time. 2.The canteen followed this schedule, only being open a few hours per day.
When I stood in the doorway, I realized I had to act fast or I would be left behind. 3. Unlike my school lunchroom, here everyone lined up and took a tray, and instead of silverware there were chopsticks and soup spoons.
As I was pushed along the line, I saw dishes I didn't recognize and as people cut in line and picked up dishes left and right, 4. I ended up taking a pork and cucumber dish and a tofu salad.
I have been at my company for over a year and a half. 5. I have learned what dishes I like, mostly by trial and error, and a lot of the workers know me and say hello to me.
I am still getting used to eating lunch at "lunchtime", but I think the schedule definitely helps keep me on track during the day. I wish there were something like this at offices in my hometown.
A.I thought I had missed a fire drill.
B.There was no emergency; it was just lunchtime.
C.I noticed things at lunchtime were a bit different.
D.I felt that I needed to make some quick decisions.
E.The canteen reminded me of my school lunchroom.
F.And now I am glad to say I am more confident in the canteen.
G.I was not very familiar with the local food or restaurants in China.
难度: 中等查看答案及解析
Mac was cycling along a road in Canada's Yukon, halfway through a 2,750-mile bike tour to Prudhoe Bay, Alaska. He was carrying a 30-pound camping bag, ___________ he wasn't moving very fast. Suddenly he heard loud breathing behind him. "Man, that's a big dog!" he thought. He looked to the side, but to his great___________, he saw that it wasn't a dog, but a wolf, running hard to___________ him.
Mac's heart jumped. He reached for the___________ from his bag. With one hand on the handle bar, he___________ the spray. A bright red cloud covered the wolf___________, and it fell back, shaking its head. But a minute later it was by his side again. He sprayed a second time, and the wolf fell back again, but only to quickly restart its___________.
The wolf was getting closer and closer, ___________ a dozen yards away. Mac waved and yelled at passing motorists, but meanwhile___________ hard. He knew clearly that he must be careful not to slow down. Otherwise, he would become a____________ of the wolf.
Paul and Becky were driving along the same road. From a distance, they spotted what they ____________ was a dog running after a man on a bike. As they got____________, they realized it was a wolf.
Mac heard a car coming up behind him, and he slowed down. The car turned around the____________, then suddenly stopped in front of him. Mac____________ off his bike and dashed for the back door of the car. It was locked. Paul quickly unlocked the door so as to let Mac in, and the____________ man dived in, shutting the door behind him.
It was quite a while before Mac became calm and cried out: "I thought I was going to die!"And Paul and Becky were glad that they had given a helping hand to people in need.
1.A.but B.so C.for D.or
2.A.regret B.disappointment C.fear D.anger
3.A.catch up with B.break away from C.give in to D.come back to
4.A.hammer B.stick C.gun D.spray
5.A.dropped B.fired C.threw D.held
6.A.in turn B.at last C.in time D.at random
7.A.flight B.race C.journey D.attack
8.A.still B.just C.also D.even
9.A.kicked B.rode C.hit D.pressed
10.A.victim B.competitor C.killer D.protector
11.A.decided B.declared C.assumed D.found
12.A.faster B.closer C.stronger D.wiser
13.A.climber B.motorist C.cyclist D.runner
14.A.sent B.fell C.turned D.jumped
15.A.frightened B.worried C.discouraged D.confused
难度: 中等查看答案及解析
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
On Oct. 16, 2018, one of the two co-founders of Microsoft, Paul G. Allen, 1. (die)at age 65 from cancer.
When 2. comes to Microsoft, the first person we think of was Bill Gates, the other co-founder of the firm. 3., Allen was just as important to the 4. (create)of the company. Allen was, many people say, a much quieter person. He was content with the science side of things, while Gates has the 5. (good)head for business.
When the pair started Microsoft in the mid-1970s, they focused on the microcomputer industry. Microcomputers were small computers 6. (design)to be used in the home. 7. they lacked, though, was an operating system, which is where Microsoft came in. The company’s big break came in 1980, 8. Microsoft created the MS-DOS operating system. Later came Windows.
After Allen passed away, Bill Gates made a statement 9. (praise)Allen, “Even in high school, before most people knew what a personal computer was, Paul predicted that chips would get super-powerful and would 10.(eventual)give rise to a whole new industry. ”
难度: 中等查看答案及解析
假定你是李华，你校计划周六举行主题为保护环境人人有责演讲比赛，请给交流生Chris写封邮件，邀请他参赛，内容包括：
1.邀请对方参赛；
2.告知比赛时间、地点；
3.就如何准备提出建议。
注意：1.词数80左右;
2.可以适当增加细节，以使行文连贯;
Dear Chris，
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Hua
难度: 中等查看答案及解析