题目
题型：不详难度：来源：
There are some things humans can go without. We can lose a kidney or a lung, an arm or two and still live perfectly well. But some fish put us to shame. They can get by without stomachs.
One such fish is the stout longtom. The group it belongs to carries a more appropriate name: the needlefish. All needlefish lack stomachs. Their ancestors had them, but later they were lost.
The stout longtom can reach 1.3 meters in length, and lives near the sea surface. Like all needlefish, it can jump out of the water to escape its enemies. Tropical fishermen are sometimes injured by needlefish. In 1977, a 10-year-old Hawaiian boy was killed when a needlefish jumped through his brain. The longtom eats smaller fish. It teeth are not good at cutting fish into pieces, so it swallows fish whole.
Ryan Day from Australia and his colleagues wanted to know how the longtom digests its meaty meals without a stomach, so they ran some chemical tests about the fish.
Day’s results show that the longtom can consume food without the help of a stomach. It uses a special material called trypsin that can break down proteins without acid — although the approach is less efficient than using a stomach.
Because it’s a meat-eating animal, the longtom gets a lot of protein in its food, so it can afford this slightly less efficient system for absorbing it. Two plant-eating fish that Day studies actually had higher levels of trypsin in their body, as their food was low in protein.
Day thinks that the longtom and its stomachless relatives might actually have arrived at an energy-saving solution. He says that although the stomach is critical to many kinds of animal, the organ is “a fairly expensive organ to run”. This perhaps explains why some animals have got rid of theirs.
小题1:What does the underlined phrase “get by” mean?
| A．Recover. | B．Fight. | C．Hunt. | D．Live. |
| A．catches smaller fish in the water | B．digests the smaller fish in its body |
| C．can jump so high to escape its enemies | D．uses acid to break down the protein |
| A．Trypsin. | B．Acid | C．The stomach. | D．Protein in its body. |
| A．the longtom can make acid easily |
| B．the longtom often waste energy |
| C．the longtom’s high-protein food helps its unique way of consuming food. |
| D．meat –eating fish have higher levels of trypsin in their bodies than plant-eating fish |
答案
小题1:D
小题2:B
小题3:A
小题4:C
解析
小题1:猜测词义题。根据第一段内容可知这种鱼可以不要胃生活。答案为D。
小题2:细节题。根据第四段wanted to know how the longtom digests its meaty meals without a stomach。
小题3:细节题。根据第五段第二行It uses a special material called trypsin that can break down proteins without acid。
小题4:推理题。根据第六段内容可知是因为它的食物营养价值高。
核心考点
试题【 There are some things humans can go without. We can lose a kidney or a lung, an】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Let"s face it．No one drinks diet soda for the taste．People drink diet soda in the hope that it will help them lose weight or at least keep them from gaining it．Yet it seems to have exactly the opposite effect, according to a new study．
Researchers from the University of Texas said those who drank two or more diet sodas a day had waist size increases that were six times greater than those who didn"t drink diet soda．"What we saw was that the more diet sodas a person drank, the more weight they were likely to gain," said Sharon Fowler．
The study was based on data from 474 participants in a large, ongoing research project, where the participants were followed for nearly l0 years．
While the findings are surprising, they also offer some explanations．
Nutrition expert, Melanie Rogers, who works with overweight patients in New York, has found that when patients are switched from regular to diet soda, they don"t lose weight at all．"We weren"t seeing weight loss necessarily, and that was confusing to us," said Rogers．
So why would diet soda cause weight gain? No one knows for sure yet, but it could be that people think they can eat more if they drink diet soda, and so over-compensate for the missing calories．
A related study found some sweeteners （甜味剂） raised blood sugar levels in some mice．"Data from this and other potential studies suggest that the promotion of diet sodas and artificial sweeteners may be risky," said Helen P．Hazuda, professor at the University of Texas"s school of medicine．"They may be free of calories, but not of consequences．"
小题1:People drink diet soda to _____．
| A．enjoy its taste | B．achieve weight loss |
| C．stay in fashion | D．gain more energy |
| A．causes people to become heavier | B．helps people to be healthier |
| C．makes people much thinner | D．offers people more calories |
| A．regular soda makes people lose more weight |
| B．diet soda does help reduce calories |
| C．diet soda drinkers tend to eat more food |
| D．most blood diseases come from diet soda |
| A．sweeteners |
| B．diet soda drinkers and sweetener takers |
| C．sodas |
| D．diet sodas and artificial sweeteners |
Thank you for your interest in helping animals! Volunteering is a wonderful way to learn, have fun and give back to your community（社区）. There are many ways to care for the animals at PAWS.
Youth Work Party
If you are ten years or older, you can join the Youth Work Party Team with a parent to work on different projects around PAWS in Lynnwood, WA. For example, you can build boxes for frightened, injured wildlife to hide in. Ask your parent to sign up to join a work party. If you are eighteen years or older, you can join the Youth Work Party Team independently.
PAWSwalk
PAWSwalk is our biggest fundraising（筹款）event of the year, held at the end of the summer to raise money to care for the animals. You can collect money with the help of your family, friends and school, and then walk in the event.
Cookie Sale
Selling homemade dog cookies is a wonderful way to help the animals. PAWS can provide brochures（小册子）to give out when you sell the cookies prepared by you and your parents, so people can learn about PAWS at the same time. You can find homemade dog cookie cooking instructions on the Internet or by checking out cookbooks for dogs at the library.
Movie Night
Invite friends, family, neighbors and classmates to watch your favorite animal movie, like Babe or Charlotte’s Web. Ask them to bring an “entrance fee” of donations or supplies for the animals.
Thanks again for your interest in PAWS and helping animals. Share your ideas with your parents and invite a few friends to join you in helping make a difference for animals. If you have any questions, call 425-787-2500-261.
小题1:Who may work in the Youth Work Party Team by himself/herself ?
| A．A ten-year-old student. | B．A thirteen-year-old student. |
| C．A sixteen-year-old student. | D．A nineteen-year-old student. |
| A．sell cookbooks for dogs | B．cook and sell dog cookies |
| C．sell cookies made by PAWS | D．offer brochures about cookies |
| A．Youth Work Party. | B．PAWSwalk |
| C．Cookie Sale | D．Movie Night. |
| A．a skill training program for youths |
| B．a series of cookbooks for dogs |
| C．an animal protection organization |
| D．a community center for children |
For the most part, you are probably only exposed to the music that is played on your favorite radio stations and TV shows, music Web sites, or the music that your friends and family members enjoy. While you probably know a lot about your favorite type of music, it can be a rewarding experience to enlarge your horizons（眼界）, discovering artists and types of music that you’re not familiar with. Who knows, you might discover you like certain types of music you never even considered.
Have you ever wondered about the history and influences of your favorite types of music ? For example, did you know that rock ‘n’ roll originated（起源）from the blues, and that the blues began as a form of musical expression for African Americans during slavery（奴隶制度）？Did you know that most hip-hop is heavily influenced by early rhythm blues and jazz ?
There are many fun ways to learn about different musical styles and their historical roots. For example, if you like hip-hop, listen to some of your favorite CDs and take note of the samples the performers used to create the songs. There is a possibility that the artist used parts of older songs to create the music. You can go to the library or online to learn more about the artists and listen to more of their music by checking out CDs from the library or downloading songs online for a small fee.
You can learn so much about culture and history just by paying attention to different types of music and what is being expressed in the songs. There are so many different styles of music to learn about, and you owe（欠）it to yourself to make an effort to listen to and learn about them.
小题1:The main topic of this passage is _____.
| A．creating music | B．performing music |
| C．enjoying your favorite music | D．learning about music |
| A．Rock ‘n’ roll. | B．The blues. |
| C．Hip-hop. | D．Jazz. |
| A．By writing down the names of the music. |
| B．By creating music from older songs yourself. |
| C．By caring about what is being expressed in music. |
| D．By keeping a record of fees after downloading songs online. |
| A．you should try harder to learn about music |
| B．you should return something to music |
| C．you should borrow music CDs from others |
| D．you should buy music CDs yourself |
For better eyesight, doctors advise limiting the hours of screen time and encourage having enough eye resting time.
However, another study shows that sitting in front of computer or TV screens for long hours is not the only reason for myopia（近视）. An Australian research team studied young children in Sydney and Singapore to find the reasons for myopia.
The research team found that the prevalence（流行）of myopia among children in Sydney was lower than children in Singapore, even though they spent more time in front of computer and TV screens. The major finding is that children in Sydney spend longer hours on outdoor activities than those in Singapore.
Indoor and outdoor sports activities both make the eyes focus on more distant objects, which prevents the eyes from changing shape. But outdoor activities may better help avoid myopia than indoor sports activities.
Jane Gwiazda, who does research in sight problems, says: “Natural light is good for eye growth. And extra vitamin D from the sun might contribute to eye growth.”
Many doctors suggest that every child get its first eye test done when he/she is about two and half years old, and even if his/her sight seems perfect.
It is necessary for myopic children to wear glasses to prevent headaches, trouble reading or injuries. It is also important that schools invite doctors to test their students’ eyes.
If that is not possible, school teachers should at least encourage parents and children to have regular eye examinations and wear glasses. And parents should remember not only to limit the total screen time for their children, but also to encourage them to spend time outdoors.
小题1:What’s the aim of the study by the Australian research team ?
| A．To find the reasons for myopia. |
| B．To find the ways to treat myopia. |
| C．To prove the bad effects of myopia. |
| D．To prove the prevalence of myopia. |
| A．Because Sydney children watch less TV. |
| B．Because Sydney children have more eye resting time. |
| C．Because Sydney children use computers less. |
| D．Because Sydney children do more outdoor sports. |
| A．Sydney children don’t study hard. |
| B．Singapore children do few exercises. |
| C．Outdoor activities do more good to eyes. |
| D．Room light does harm to children’s eyes. |
| A．Children should have eye tests as soon as they reach school age. |
| B．Doing outdoor activities with no glasses is good for myopia children. |
| C．Focusing on distant objects can help the eyes keep their original shape. |
| D．Children should limit their time in the sun in order to protect their eyes. |
In 1953, the New Zealander Edmund Hillary, then 33, joined a British Qomolangma expedition led by Colonel John Hunt. Tom Bourdillon and Charles Evans were the first team to attempt the summit (顶峰). Despite a violent storm, they reached the South Summit — at 28,700 feet (8,748 meters) — by 1 p.m. on May 26. But both men knew they would run out of oxygen if they went on. They agreed to turn back.
Two days later, Hillary and Norgay, set out from Camp IX at 25,900 feet to make the next attempt. At 27,900 feet they made a temporary camp on a six foot wide rock to spend the night. At 6:30 the next morning, cheered by clearing skies, the team moved out. Roped together, cutting steps with their ice axes, they inched up a steep, knife-edged ridge (山脊) southeast of the summit. They reached the South Summit by 9:00 a.m.
Farther up, they met a 40-foot icy rock face, which was later named the Hillary Step. “…looking up at the rock step at 29,000 feet, it really did look extremely difficult to overcome,” said Hillary. But they found a narrow crack on the surface of the rock, just large enough to move inside on hands and knees, and managed to climb it by supporting feet against one side and backs against the other. Hillary said, “That was really the first moment during the whole of the expedition that I was confident that we were going to get to the top.”
The last few yards to the summit were relatively easy. “Then I realized that the ridge, instead of rising ahead, now dropped sharply away,” Hillary said. “I looked upward to see a narrow ridge running up to a sharp point. …and we stood on the summit.” It was 11:30 a.m. on May 29, 1953.
小题1:What is the passage mainly about?
| A．The climbing history of Qomolangma. |
| B．The life and achievements of Edmund Hillary. |
| C．How Hillary and Norgay conquered Qomolangma. |
| D．How the Hillary Step got its name. |
| A．25,900 feet. | B．27,900 feet. |
| C．28,700 feet. | D．29,000 feet. |
| A．fine weather conditions | B．good rest the night before |
| C．enough food supplies | D．good climbing skills |
| A．much easier to climb than she expected |
| B．impossible for her to overcome again |
| C．easy to climb up but hard to climb down |
| D．one of the biggest barriers before the summit |
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