Look at your classmates around you. You all wear the same uniform and similar sneakers. Do you want to stand out among them? A fashionable and useful backpack can be a great idea!
Backpacks are lightweight and easy to carry.
They are great tools for students. They help you to stay organized. You can keep school things, books and personal items like cell phones and keys neatly (整洁地). With a unique backpack, you can also stand out among your classmates.
Tourists also love backpacks. With convenient backpacks, backpackers can move freely from one place to another. Meanwhile, they can also free their hands to do other things like taking photos.
But in the very beginning backpacks were not what we see today.
It is thought that US hiker Dick Kelty invented the first modern backpack in 1951. He used nylon (尼龙) and aluminum tubing (铝制管型材料) to make backpacks lightweight. Then he added shoulder straps (带子) and waist straps to transfer(转移) much of the weight to the hips (臀部).
Today, backpacks come in different styles.
Rolling (滚动的) backpacks have wheels on the bottom. Users can pull them along the ground if they are too heavy to carry on their shoulders.
And with more people bringing laptops to school and work, backpacks also offer space for lightweight electronics.
1. Backpacks are useful for tourists because_____.
A. they have wheels on the bottom
B. it frees tourists’ hands to do other things
C. tourists can feel fashionable
D. they make tourists feel special
2.The underlined word “unique” in the passage probably means “ ”.
A. 普通的 B. 独特的
C. 有用的 D. 便利的
3. The first modern backpack was thought to be invented by _____.
A. a famous inventor B. an Englishman
C. a hiker D. a student
4. In order to make the backpack light, _____ is used.
A. cotton B. nylon
C. cloth D. paper
5. The passage mainly talks about _____.
A. a famous TV drama
B. different functions (功能) of backpacks
C. the history of backpacks
D. who wears backpacks
The natural world teaches us a great deal about recycling (循环再利用). In nature, recycling happens every day. For example, when leaves fall to the ground, they will turn into compost (肥料), helping ____ grow healthily and strong. When an animal dies, it becomes food for ____ animals. Nothing is wasted. But humans have created things like plastic bags ____ can’t be broken down by nature. Our rubbish kills animals and ____ water and soil. ____ we continue making too much rubbish, the problem will only get ____ . If nature can’t reuse the rubbish, we ____ recycle it. We should clean up the rubbish we’ve made because nature can’t.
Recycling is important. In reusing material instead of throwing it away, we can also benefit from it. ____ the Earth is rich in natural materials like water and trees, these materials are not endless. We use up our natural materials much faster than the Earth is able to reproduce them. For example, each year we ____ more than 6,000 square miles of forest. But it ____ an average of 25 years for a new tree to grow.
Recycling can help us save the Earth, so let’s take action right now.
1.A. animals B. plants C. humans D. river
2.A. another B. other C. others D. the other
3.A. who B. which C. what D. where
4.A. pollutes B. produces C. recycles D. cleans
5.A. When B. Whether C. Why D. If
6.A. best B. better C. worse D. worst
7.A. may B. can C. must D. need
8.A. Because B. If C. Although D. As
9.A. break down B. grow up C. cut down D. fix up
10.A. spends B. costs C. pays D. takes
--Is Tom still in New York or already back at home?
--I’m not sure ________. I’ll call to make sure.
A. how he will be back B. that he has come back
C. why he has come back D. if he has been back
Everyone may feel time ______very quickly when they do something interesting.
A. go by B. to go by
C. went by D. gone by
--Driving less, walking more is good for our health.
--So I'd rather ______an hour's walk to work than consider ______a car.
A. take, drive B. take, to drive
C. take, driving D. taking, driving
There is _______ egg at home. Will you please get _______ for me, please?
A. no, some B. not, some
C. not any, any D. not an, any
