阅读微技能导练英语人教版七年级上册 Unit4MainIdeaB.docx

1、阅读微技能导练英语人教版七年级上册 Unit4MainIdeaB1. The Moon has one-sixth the gravity of Earth. Everything weighs six times less on the Moon. One woman weighs 120 pounds on Earth. On the Moon, the same woman would weigh only 20 pounds. She could jump higher on the Moon than she could on Earth. A blue whale weighs 1

2、50 tons. If a blue whale could go to the Moon, it would weigh just 25 tons. 1. The story mainly tellsA. how to get to the Moon B. about weight differences on Earth and the Moon C. what a woman weighs on the Moon D. how much a blue whale weighs2. A crazy quilt is a work of art. People sew together od

3、d-sized pieces of cloth. They dont use any special patterns. They use many different shapes and fabrics. After a backing is attached, the quilt is finished. It looks like a large, beautiful puzzle. Maybe a crazy quilt should have a nicer name. 2. The story mainly tells A. that a crazy quilt is a wor

4、k of art B. how odd-sized pieces of cloth are used C. how a backing is attached D. how a crazy quilt looks like a puzzle3. The worlds greatest traveler is the Arctic tern. This bird migrates from one end of Earth to the other. It flies from the Arctic to the Antarctic and back each year. The round t

5、rip is about 23,600 miles. 3. The story mainly tells A. how an Arctic tern looks B. about animal movement C. about the migration of the Arctic tern D. about the Arctic terns nest4. Forest fires burn thousands of trees each year. They are unsafe to the people and homes in their path. However, fires i

6、n forests are not always harmful. Fire is one of natures ways of destroying problem weeds. Then native plants can return When thick trees and brush are gone, animals find it easier to get food. 4. The story mainly tells A. how forest fires start B. how forest fires can be helpfulC. how fires destroy

7、 problem weeds D. how animals find food5. Sneakers were invented more than 100 years ago. They were called croquet sandals. They cost five times as much as other shoes, so only rich people wore them. Then a company began to make tennis oxfords. Most people could afford these. They were very popular.

8、 Soon special sneakers were made for other sports, such as running. Now we have all sorts of sneakers. 5. The story mainly tells A. how sneakers have changed through the years B. which sneakers are right for your sportC. what the difference is between shoes and footwear D. who could buy croquet sand

9、als1. The ocean is 7 miles deep in some places, but scuba divers can go down less than a mile. Below that the water pressure is too strong. Scientists have built special submarines that can go deeper. Some of them are made to hold one person. Others can be controlled from ships on the surface. With

10、these subs people go nearly 4 miles down. The deepest parts of the ocean are still a mystery. 1. The story mainly tells A. how strong the pressure is in the ocean B. which submarines can be controlled from ships.C. how water pressure affects exploring in the ocean D. how people see the bottom of the

11、 ocean2. Thousands of years ago, someone was traveling across the desert. For food he carried sheeps milk in a goatskin bag. The hot desert sun turned the milk thick and sour. He was hungry, so he ate the strange stuff. To his surprise he liked it! Thats how yogurt was discovered. 2. The story mainl

12、y tells A. which foods to take in the desert B. how yogurt tastes C. how yogurt was first made D. how to stay alive in the desert3. Many green leaves, which are food factories for trees, change color in the fall. Their green coloring makes food out of sunlight, air, and water. When the days grow sho

13、rter in the fall, these factories slow down and then finally stop. The green slowly fades away. Where do the yellow, orange, and brown come from? They were in the leaves all the time, but the green was too bright for the other colors to show. 3. The story mainly tells A. why leaves change color in t

14、he fall B. how leaves make food from sunlight, air, and water C. what the parts of a tree are D. what food factories make4. When baseball was new, players had to throw the ball and hit the runner to make an out. The ball had to be big and soft so the runners wouldnt be hurt Later, players used the t

15、ag as a way to make an out. This made the game more exciting, and it caused some other big changes. The ball could be smaller and harder. The smaller ball could be thrown faster, and batters could hit it farther. Thus the modern game of baseball was born. 4. The story mainly tells A. how baseball ch

16、anged B. how people used to make an out in baseball C. how large old baseballs were D. how far a modern baseball can be hit5. If you are going on a picnic, dont wear anything that smells good. Some insects are crazy about perfume. Bees will smell you and come swarming. People have also found that be

17、es like bright, flowery material. It seems that some insects just cant tell the difference between the real thing and a copy! 5. The story mainly tells A. when to wear perfume B. how to dress well on trips C. how to avoid bees on picnics D. how some things can attract insects1. It takes practice and

18、 skill to throw a Frisbee. Be sure your index finger is lined up on the outside rim. Tilt the edge of the Frisbee that is opposite your thumb downward. The stronger the wind, the more the Frisbee should be tilted. You need a strong wrist. Its the snap of your wrist that sends your Frisbee spinning.

19、1. The story mainly tellsA. how to throw a Frisbee B. how important strong wrists are C. what to do in a strong wind D. how to aim at your target2. Why do rabbits always seem as if they have itchy noses? Experts say the nose wiggling helps keep their nose tissue damp. This improves their sense of sm

20、ell. Rabbits adjust their air intake in this way, too. It keeps them cool on hot days. Sometimes nose wiggling simply means rabbits are excited. 2. The story mainly tells A. why rabbits wiggle their noses B. how a rabbit improves its sense of smell C. why rabbits adjust their air intake D. what rabb

21、its do when they are excited3. Maybe you have seen flamingos in a zoo. These brightly colored birds with long necks look too pink to be real. Wild flamingos get their bright-pink feathers from the plants and fish they eat. However, in zoos they dont eat the same things they do in the wild. They coul

22、d turn white. To keep this from happening, the zookeepers give these birds a special pill. 3. The story mainly tells A. how flamingos stay pink B. what flamingos eat C. what kinds of birds there are D. how birds in zoos get pink4. If you sneeze, youll almost always hear someone say bless you. Some h

23、istorians think that people started saying bless you more than 1,000 years ago in Europe. At that time the plague was spreading everywhere. One of the first signs of this terrible sickness was sneezing. People thought the blessing might help keep them from getting sick. 4. The story mainly tells A.

24、how a disease spread across Europe B. what happens to the body when people sneeze C. how the saying bless you got started.D. why sneezing is a sign of getting sick5. Scientists are studying a sea turtle. She lives in a tank in Boston. The scientists think she can teach them how she uses hearing to s

25、ense her world. She is being trained to respond to signals. 5. The story mainly tells A. about turtle senses B. where the turtle lives C. how turtles make signals D. what scientists hope to learn from the turtle1. Television was invented in the 1920s. Few people had televisions until the 1950s. Fort

26、y years later, 98 percent of the households in the United States had a television. Watching television is a popular activity. Many homes have two or more televisions. Americans watch more than 1,500 hours of television per person each year. 1. The story mainly tells A. the history of television comm

27、ercials B. when television was invented C. what television-watching habits Americans have D. how televisions actually work2. When their enemies chase them, ostriches lie down on the sand. The giant birds stretch their necks out flat on the ground. When they lie there, the loose feathers on their bod

28、ies look like bushes. Ostriches dont need to hide often. Their strong legs are good for both running and fighting. 2. The story mainly tells A. how ostriches stick their heads in the sand B. how smart ostriches are C. how ostriches avoid their enemies D. how strong ostrich legs are3. Ballet dancers

29、often spin around and around. Why dont they become dizzy? A dancers body turns smoothly. The dancer holds his or her head still and then jerks it around quickly. This way the head is still most of the time. The dancer does not become dizzy. 3. The story mainly tells A. why a dancer spins B. how to b

30、ecome a ballet dancer C. where a ballet dancer practices D. why a dancer does not become dizzy when doing turns4. An octopus gets its name from its eight arms. There have been new discoveries about these sea creatures. Experts have found that an octopus has a memory. It uses that memory to solve pro

31、blems. An octopus in danger uses a built-in defense. It squirts a stream of ink to help it hide. 4. The story mainly tells A. that an octopus has eight armsB. how an octopus uses its memory C. some interesting facts about octopuses D. how an octopus can squirt a stream of ink5. It is important to pu

32、t a return address on mail. Mail with a wrong mailing address goes to the dead-letter office. There postal workers open it to search for clues. If they dont find any, the mail is thrown away. The post office can sell items of value. It keeps the money. 5. The story mainly tells A. how to write a letter B. what can happen to mail with no return address C. how mail gets thrown away D. how the post