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At night, bats fly through the air, catching hundreds of insects and other small animals. But during the day, they hardly move at all. Instead, bats pass the time hanging upside down from a secret spot.
There are a couple of reasons why bats rest this way. First of all, it puts them in a position for takeoff. Unlike birds, bats can’t fly into the air from the ground. Their wings don’t produce enough lift to take off from a dead stop, and their hind legs are so small and underdeveloped that they can’t run to build up the necessary takeoff speed. Instead, they use their front claws to climb to a high spot, and then fall into flight.
During the hours when most enemies are active, bats gather where few animals would think to look and most can’t reach. This allows them to disappear from the world until night comes again. There’s also little competition for these resting spots, as other flying animals don’t have the ability to hang upside down.
Bats have a unique physiological adaptation that lets them hang around this way without using any energy. For you to hold your fist around an object tight, you contract（紧缩）several muscles in your arm, which are connected to your fingers by tendons（腱）；as one muscle contracts, it pulls a tendon, which pulls one of your fingers closed. A bat’s talons（爪）close in the same way, except that their tendons are connected only to the upper body, not to a muscle. To hang upside down, a bat pulls its claws open with other muscles. To get the talons to take hold of the surface, the bat simply lets its body relax. The weight of the upper body pulls down on the tendons connected to the talons, causing them to hold tight. Therefore, the bat doesn’t have to do anything to hang upside down.
1.Bats hang upside down because________．
A. they haven’t developed a pair of strong claws B. they can’t start to fly from the ground directly
C. they have no hind legs to support their body D. they can’t find quiet places to stay during the day
2.The third paragraph tells us that bats’ hanging upside down_______.
A. is to save their energy for night movement B. is a way to fight against flying animals
C. is a great way to hide from danger D. is a skill to compete for the flying places
3.Why can bats hang upside down easily?
A. Because their upper body is light.
B. Because they have strong muscles.
C. Because their talons are linked to muscles tightly.
D. Because their tendons are linked to their upper body.
4. What is the passage mainly about?
A. The living habits of bats. B. How and why bats hang upside down.
C. The importance of bats’ hanging upside down. D. How bats use their energy at night.
高二英语阅读理解简单题查看答案及解析
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Music notes fly through my ears.
Soft sounds float in the air，
as if they are floating on water.
Music is like a paintbrush，
painting sounds in the sky.
A warm sun shining bright，
clouds drifting far away in the night，
to the sounds of music.
Music is nature’s friend，
as one paints our earth，
and the other fills our hearts.
1.The writer associates music with the following EXCEPT ______.
A. sounds floating on water
B. a paintbrush painting sounds in the sky
C. one friend of nature
D. a person who plays music
2.The poem expresses the idea that the author______.
A. likes to fly in the air with the sound of music
B. likes painting clouds while listening to music very much
C. enjoys music because music can comfort his heart
D. would like to compose music with his paintbrush by himself
3.What may be the best title for this poem?
A. Painting B. Music C. Sunshine D. Warmhearted
高二英语阅读理解中等难度题查看答案及解析
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Stories and movies often make bats into scary creatures that attack in the dark of night. In real life, however, most bats are harmless. A few are even helpful to humans.
Over 800 species or types of bats feast on troublesome insects that damage crops or spread disease. Another 400 or so bat species eat ripe fruit. These bats are very useful because they pollinate (授粉) flowers and disperse (分散) seeds. There are also a few species of larger bats that hunt small animals like mice, fish, and frogs. A very few even drink blood.
The blood drinkers are the three species of vampire bats. However, the vampire bat doesn’t suck blood. Instead, it makes a wound with its sharp teeth and then laps the blood up like a kitty. The animal victim usually sleeps through the entire process. While attacks on humans have occurred, the bats’ common targets are livestock and other animals. Interestingly, the vampire bat may become useful to humans. You see, a chemical in the bat’s saliva (唾液) thins blood and dissolves blood clots (血栓). Studies indicate this could be a great aid in treating people with strokes. In the future, medicine may be made from vampire bats’ saliva.
Some people think bats are birds, but they’re not. They have fur, not feathers. And their babies do not hatch from eggs; they’re born alive. Also, bats have mouths and noses; birds have beaks. Scientists put them in a special mammal group called Chiroptera.
1.Most species of bats eat ________.
A.ripe fruit B.mice and frogs
C.insects D.blood
2.Which of the following is TRUE about blood drinkers?
A.Vampire bats drink blood directly.
B.The bats’ uncommon targets are human beings.
C.A chemical in the bats is of great benefit treating heart disease.
D.Medicine has been produced from the bats’ saliva
3.What is the best title of the passage?
A.Blood Drinkers B.Vampire Bats
C.Amazing Bats D.Scary Creatures
高二英语阅读理解中等难度题查看答案及解析
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Bats are the only mammals(哺乳动物) which can fly properly. Other flying mammals have wings of thin skin which cover their sides between their front and back legs. They can only fly from tree to tree, but they cannot change direction when they want to.
All bats fly at night and most of them hunt for flying insects(昆虫), such as bees. The common bat finds its food by making a constant noise that the human ear cannot hear. The bat listens for echoes(回声) of the noise as it bounces(反射) off the insects showing the bat their position.
The Fruit bat feeds on many different kinds of fruit. It does not use echoes but instead has very large, special eyes to see even in low light. The largest Fruit bat has a wing length of 0.75 meters. The Vampire bat drinks the blood of large mammals, and a few bats catch fish, birds and even other bats.
1. Some flying mammals are not real flyers because _____.
A. they do not have wings B. their wings are too thin
C. they have skin between their legs D. they cannot turn around in the air
2. When common bats hunt for food they _____.
A. use echoes to kill the insects B. make a noise to draw insects to them
C. produce a sound and listen to the echoes D. listen noise made by the insects
3. Unlike other bats, the Fruit bat _____.
A. can see very well B. eats fruit and fish
C. has very long wings D. has excellent hearings
4.The word "it" in the second paragraph refers to _____.
A. the bat B. the echo C. the noise D. the insect
高二英语阅读理解中等难度题查看答案及解析
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The flying fox is not a fox at all. It is an extra large bat that has got a fox’s head, and that feeds on fruit instead of insects. Like all bats, flying foxes hang themselves by their toes when at rest, and travel in great crowds when out flying. A group will live in one spot for years. Sometimes several hundred of them occupy a single tree. As they return to the tree toward sunrise.
Flying foxes have babies once a year, giving birth to only one at a time. At first the mother has to carry the baby on her breast wherever she goes. Later she leaves it hanging up, and brings back food for it to eat. Sometimes a baby bat falls down to the ground and squeaks for help. Then the older ones try to pick it up. If they fail to do so, it will die. Often hundreds of dead baby bats can be found lying on the ground at the foot of a tree.
1.The passage tells us that there is no difference between the flying fox and the ordinary bat in ________.
A. their size B. their appearance
C. the kind of food they eat D. the way they rest
2.At daybreak every day flying foxes begin to ________.
A. fly out toward the sun B. come back to their home
C. look for a new resting place D. go out and look for food
3.How do flying foxes care for their young?
A. They only care for their own babies.
B. They share the feeding of their young.
C. They help when a baby bat is in danger.
D. They often leave home and forget their young.
高二英语阅读理解困难题查看答案及解析
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At any given time, hundreds of postcards are in transit (运输中) across the world as strangers communicate through a movement called Post-crossing.
Emma Delaney says it’s a sad day when there isn’t a postcard in her mailbox. She doesn’t have a bunch of friends travelling overseas at the moment —— she’s just really active in the underground hobby of Postcrossing.
“I’ve sent over 3,000 postcards, but I’ve been doing it for close to seven years,” she says. “My husband, generally appreciative of my hobby, is sometimes frustrated by the amount of cardboard hanging around the house or in my car.”
Postcrossing is a hobby where strangers send each other postcards across the world. You register on the website, list your interests and preferences for postcards, then receive an address of a stranger on the other side of the world to send a postcard to.
“I tend to send a lot of postcards of the local area because people are interested in where you’re from and what you do,” Emma says.
From Uzbekistan to Belarus and Kazakhstan to Moldova, Emma has a growing collection of photos from around the world. The postcards have helped shape her international travelling too. “I didn’t travel overseas until I was 32 and a lot of the locations we chose for our honeymoon were selected because of the postcards I’d received.”
“Some people see sending mail as being a bit boring and unfashionable, but Postcrossing is popular and lots of people are fascinated that I do it.,”
The Postcrossing project has just celebrated its eighth birthday and has over 400,000 active members in 215 countries. The group says they’ve delivered over 18 million postcards.
And while postal workers aren’t supposed to read people’s postcards, Emma says she’s happy for them to do so at her post office in Shellharbour. She even encourages her correspondents to say hello to the Australia Post staff.
“It’s a hobby that I continue to do because I find it enjoyable and relaxing.”
1.Emma Delaney’s friends .
A．do a lot of travelling.
B．send her lots of postcards.
C．share the same hobby as her.
D．aren’t active in travelling abroad.
2.What’s Emma’s husband’s attitude towards her hobby ?
A．Somewhat annoyed.
B．Totally unconcerned.
C．Deeply disapproving.
D．Strongly supportive.
3.What’s the benefit of being involved in Postcrossing according to Emma Delaney ?
A．Broadening the mind.
B．Deepening the mind.
C．Giving others a helping hand.
D．Bringing her family more happiness.
4.The Postcrossing project .
A．delivers both postcards official letters.
B．was set up a couple of years ago in Australia.
C．has granted membership in 215 countries all over the world.
D．receives more public approval compared with sending mail.
高二英语阅读理解中等难度题查看答案及解析
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At about 4 am, after hours of being unable to sleep, of shivering in the cold mountain air and trying to silence my crying kids who kept waking up, of attempting to find a comfortable sleeping position, of listening to whether there might have been a bear outside our tent, I finally couldn’t stand it any more. I complained, “Everything has gone wrong.”
My wife and I were in one tent with our two young kids. A hundred yards east away was Summit Lake, where the glorious early morning mist was shimmering（闪烁）off the water. A couple miles to the southwest was the base of the Lassen Peak Trail. The base was 8,000 feet above sea level, and huge snow dotted the scenery even in mid August. Further west still was Bumpass Hell, with steam rising up.
As the sun crept up over the edge of the Lassen peak, we fired up the camp stove and had breakfast. Half an hour later, my six-year-old daughter and I were in the parking lot of the Lassen peak trail, getting ready to go up the mountainside. We wouldn’t make it all the way, but it didn’t matter. We would see nature at its extremes: the volcanic ash that layered on the earth turning the melting snow a mysterious pink as the sun struck it; the blues of the sky shading into the blues of distant lakes, which in turn shaded into the whites and grays of the snow.
My daughter grabbed my camera. She wanted to take a photo of “the composite（混合物）”of colors. Looking out over that scenery, and seeing my daughter fascinated by nature, I felt stupid about my morning complaints.
Yes, camping is uncomfortable. And yes, there’s a lot to be said for getting out a credit card,reserving a room in a nice hotel, and going out for a fancy meal. But there’s also something wonderful about being so close to raw nature. And , as important, there’s something vital about getting young children out of their increasingly modern comfort zones and forcing them to meet the world around them.
1..According to the passage, what contributed to the author’s sleeplessness ?
①the cold weather ②his crying children ③fear of bears
④sounds of bears ⑤the aches of his lower back ⑥his own complaints
A. ①④⑥ B. ①②③ C. ②④⑤ D. ②③⑤
2..Which of the following maps correctly shows the places ?
3..The underlined word “colors” in Paragraph 4 refers to ______ .
A.blue, white, gray and pink B.white, yellow, gray and pink
C.white, green ,gray and pink D.blue, green,white and gray
4..How did the author’s feeling change from the beginning to the end ?
A.Calm→Satisfied. B.Excited→Frustrated.
C.Sad→Calm. D.Regretful→Satisfied.
5..Which of the following statements can be inferred from the passage ?
A.Nature is the glass reflecting truth.
B.Nature is the best scenery designer.
C.The journey of a thousand miles starts with one step.
D.A bad beginning makes a bad ending.
高二英语阅读理解简单题查看答案及解析
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There are hundreds of visitors________in front of the Art Gallery to have a look at Van Gogh’s paintings．
A．wait B．to wait C．waited D．waiting
高二英语单项填空简单题查看答案及解析
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With at least a dozen wildfires going through western North Carolina in the fall of 2016, it would take more than one local fire department to fight the flames. In early November, the federal government sent over a team of firefighters from the Interagency Hotshot Crews.
Most of the Hotshots stayed at Hinton Rural Life Center in Hayesville, North Carolina. The center reached out to the media and community groups, hoping to get four volunteers per day to help things run smoothly for their firefighting guests. They didn’t expect a response quite so unbelievable.
Within two days, over 200 people—about a third of the town’s population—reached out to offer help, according to the center’s website. Meals and accommodation were already being taken care of, so they went above and beyond the basic things. Community members donated over 1,000 goods, including sports drinks, snacks, eye drops and so on.
Even the kids in Hayesville participated, sending thank-you cards, pictures and signs to motivate the Hotshots. The team received over 2,000 thank-you notes. After the fires were put out and the firefighters were preparing to go home, the town threw a parade（游行）to thank them and wish them well.
The firefighters were at a loss by the generosity from Hayesville. They put together their own thank-you in a YouTube video.
“You guys don’t know how much you mean, all the support you guys give us, ’’ says Ron, a firefighter from Oregon, in the video. “Out of four years when I’ve been fighting fire, this is about the most hospitable（好客的）state and county I’ve ever been in. And it brings tears to my eyes just thinking about it.”
1.What is unexpected according to the text?
A. The difficulty in putting out wildfires.
B. The firefighters’ contributions to the town.
C. The locals’ attitude towards the center’s request.
D. The firefighters’ response to the wildfires.
2.What can we know about Hayesville from the text?
A. It is a large town.
B. It is a small town.
C. It is a wealthy town.
D. It’s tough to live in.
3.Why are even the kids in Hayesville mentioned in the text?
A. To show how cute they were.
B. To encourage the firefighters to be grateful.
C. To lead in the reason for creating the YouTube video.
D. To stress the locals’ enthusiasm for the firefighters.
4.What can we infer about the firefighters from the last paragraph?
A. They felt very moved.
B. They were kind to the locals.
C. They were welcome everywhere.
D. They were confident about their work.
高二英语阅读理解困难题查看答案及解析
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of the danger in the street at night, she went home with a friend her.
A. Having been warned; accompanying
B. Warning; accompanying
C. Having warned; accompanying
D. Warned; accompanied
高二英语单项填空中等难度题查看答案及解析