B
A Trip to the Smithsonian
Ms. DeJohn stood at the front of the room.“Okay, everyone,”she began,“as you all know, We’ll visit the Smithsonian Institution on Monday. We are going to this morning discussing what you would like to see there.”
Ty raised his hand.“How many museums are we going to “That’s a good question, Ty, ”replied Ms. DeJhon.
see?”he asked. “We’re going spend some time
to choose four museums. I’d like to hear some of your suggestions. What interests you most at the Smithsonian?”
“Can we go to the National Museum of Natural History?”asked Emma.“I’d like to see the dinosaur skeletons (恐龙骨骼) there.”
“I want to see Anita and Arabella,”said Calvin.“They’re the space spiders(蜘蛛). A student wanted to know if spiders could spin webs in space, so two spiders were sent into space on Skylab Ⅱ. Anita’s and Arabella’s bodies are housed at the National Air and Space Museum.”
Ms. DeJohn began to list the students’ suggestions on the board.
“If we go to the National Zoo,”said Deepak,“we can see pandas from china. I think that getting to see them in person would be really amazing.”
“I’d like to go to the Museum of the African Art,”said Imani.“My parents moved from Kenya when they were children, but I’ve never been there to visit. My family collects African art, so I’d like to learn more about it.”
“I think we should go to the National Museum of American History.”said Chris.“They have show on the Information Age. It has some of the very first computers and even Samuel Morse’s telegraph (电报) machines.”
I like this idea, too.“ agreed Emma.“They have a ‘hands on history’ room where you can actually try things from history, like sending a telegraph.”
Ms. DeJohn smiled at the class.“How knowledgeable you all are! Now, all we have to do is take a vote, and we’ll be on our way to the Smithsonian!”
45. How many museums is the class going to visit on Monday? A. One. B. Four.
C. Five.
D. Six.
46. Anita and Arabella are ______. A. teachers
B. students
C. spiders
D. pandas
47. Which museum does Imani want to visit? A. The National Museum of America History. B. The National Museum of Natural History. C. The National Air and Space Museum. D. The Museum of African Art.
48. What can students do in the National Museum of American History? A. Send a telegraph. B. Collect African art. C. Take photos of pandas. D. See the dinosaur skeletons.
C
Summer is almost here, and the weather is heating up. Are you drinking enough water? Many kids aren’t, according to a new study in the American Journal of Public Health.
Erica Kenney, a scientist at Harvard, is the study’s leader. At the beginning, she planned to look into the amount (数量) of sugary drinks kids were drinking in schools. However, during her research she found that many kids were simply not drinking enough water.
Kenney and her team examined data (数据) from a group of 4,000 children, aged 6 to 19, between the years of 2012 and 2015. While examining the data, she noticed that more than half of the kids didn’t drink enough water. Of that group, boys were 76% more likely than girls to not have enough water in their system. Nearly one quarter of the kids reported drinking no plain water (白水) at all.
“These findings are very important because they point out a potential health problem that has not been given a lot of attention in the past.” Kenney said. “Even though for most of these kids this is not an immediate, serious health problem, this is a problem that could really have a harmful influence on health and life for many children years later.”
The human body is made up of 60% water. Not drinking enough water can lead to health problems like headaches or poor physical performance. Your body needs more water when you are in hot weather, when you are physically active, and if you have a fever.
The United States National Agricultural Library says on average, kids need between 10 to 14 cups of water every day. This water can come from both drinks and foods that have high amounts of water, such as celery, melon, or tomatoes. It is also suggested that fluids (液体) come from water instead of sugary drinks that are high in calories (卡路里) and can lead to weight problems.
“The good news is that this is a public health problem with a simple solution.” said another scientist. Steven Gortmaker, “If we can help children drink more water — a low cost, no calorie fluid — we can improve their health, which may allow many children to feel better throughout the day and do better in school.”
49. What is Erica Kenney’s purpose of doing the study? A. To prove that plain water is the best for kids. B. To explain why kids love sugary drinks most.
C. To study if kids drink enough water at school every day. D. To find out how much sugary drinks kids drink at school. 50. What does the word “potential” in Paragraph 4 probably mean? A. Happening often.
B. Relating to the past. D. Possible in the future.
C. Causing bad results.
51. The findings of the study may make people realize ______. A. the fact that boys need more water than girls B. the importance of kids’ drinking enough water C. the health problems sugary drinks bring to kids D. the necessity of kids’ drinking some sugary drinks 52. According to the passage, we can know ______. A. how to help kids drink more water B. why kids drink little water at school C. what kind of drink kids should choose D. who should be responsible for kids’ health
D
Do you know what to do if you see a python (蟒蛇) in your community? What about a seven- foot long
American lizard in front of your house? People who live in most areas in the United States do not have experiences like these. But if you live in southern Florida, you may run into a number of exotic (外来的) animals.
Exotic pets have become more and more popular in recent years in Florida. People often buy an animal
as a baby without realizing how difficult it may be to care for that animal when it is fully-grown. For example, Burmese pythons are easy to buy at exotic pet stores or online. When the snake is young, it does not require much more work than other pet. But Burmese pythons can grow to be more than 20 feet long and
can weigh about 250 pounds. There is not much space in the typical American home or yard to care for such a big animal! When the snake outgrows its cage and its owner becomes bored with caring and feeding it, the snake may be left in a wild area.
In other parts of the country, many of these exotic animals would probably not be able to live long
in the wild. But the climate(气候) in southern Florida is wet and warm — similar to the areas where many of the animals are naturally found. Many exotic pets have gradually got used to the new situation in Florida’s natural areas, and when enough of them are free in the wild, they can start breeding(繁殖).
The problem with these unexpected animals is that scientists don’t always know which ones will change
or harm the local environment. In the last few years, people visiting Florida’s Everglades National Park have watched fights between American alligators(短嘴鳄) and exotic pythons. It is not hard to imagine the effect of aggressive(凶悍的) animals. But even animals like vervet monkeys, which seem harmless, compete with other animals that eat the same plants. If their presence or behavior causes a change in the habits of local animals, the overall changes can be far-reaching.
Think about a set of dominos (多米诺牌) lined up next to one another, None of them may be touching,
but as soon as you tip one over, the whole row will fall down. 53. The writer talks about Burmese pythons in Paragraph 2 to ______. A. introduce an exotic pet to animal lovers B. explain why exotic pets appear in the wild C. suggest right ways to look after exotic pets D. stress the importance of caring for exotic pets
54. Why can many exotic animals live long in the wild in Florida? A. Because there is enough space. B. Because they can find new food. C. Because the climate is fit for them. D. Because people there protect animals well.
55. What may be the writer’s opinion on exotic pets?
A. Seeing different kinds of exotic pets in the wild is exciting. B. Exotic pets and local animals should be kept in different wild areas. C. Exotic pets in the wild may break the balance of the local environment. D. Harmless exotic animals can live peacefully with local animals in the wild.
七、阅读短文，根据短文内容，从短文后的五个选项中选出能填入空白处的最佳选项。每个选项只能用一次。(共10
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