It is said that potato chips by mistake about a hundred years ago. [ ]A. invent B. invented C. are invented D. were invented 题目和参考答案——青夏教育精英家教网—

题目内容

It is said that potato chips ______ by mistake about a hundred years ago.

[ ]

A. invent
B. invented
C. are invented
D. were invented

练习册系列答案

Happy寒假作业快乐寒假系列答案

金象教育U计划学期系统复习寒假作业系列答案

八斗才火线计划寒假西安交通大学出版社系列答案

相关题目

Saving water is an important part of going green. As water becomes less and polluted more, conservation (保护) becomes more and more important. The less water you use, the less wastewater will end up in our rivers and lakes. Wasting water means that more water needs to be treated and cleaned, a process that requires quite a lot of energy.
As it is said above, cutting down on water usage is one of the most important things you can do for your local environment and the planet as a whole. That is why more green households are going blue: cutting down their water footprint by conserving and harvesting (收获) water.
It may seem like a big concept, but going blue starts with small changes that everyone can make. Something as simple as turning off the tap while you brush your teeth can save a lot of water. Wash your fruits and vegetables in a bowl rather than under a tap to save even more. Make sure that the taps are fully turned off every time you step away from the sink or the shower — all those little drips can add up to a lot of water waste.
Another way of reducing your water footprint is reducing your dependence on the main water supply. Rainwater harvesting can meet a lot of your home’s water needs. Many of us already practice rainwater harvesting in a small way. Collecting water from your gutters (檐沟) is a great way to keep your garden green without running the sprinkler (洒水器).
【小题1】The underlined word “green” means ______ in this passage.

【小题2】According to the passage, which is NOT the reason that people should save water?

A．Treating wastewater needs much energy.

B．The water on the earth is becoming less and less.

C．The water on the earth is becoming polluted more.

D．Rainwater harvesting can meet a lot of your home’s water needs.

【小题3】According to the passage, all of these can be used to save water except ______.

A．washing fruit and vegetables under a tap

B．using a bowl to wash your fruit and vegetables

C．making sure taps are fully turned off all the time

D．turning off the tap every time after brushing your teeth

【小题4】Which of the following is the best title of this passage?

A．Save Water by Turning off the Tap

B．How to Treat and Clean Wastewater

C．Keep Your Garden Green with Rainwater

D．Save Water Starting with Small Changes

【小题5】From the passage, we can know that_____.

A．we can get enough water by harvesting

B．most people pay no attention to saving water

C．we can practice rainwater harvesting in a small way

D．harvesting water is more necessary than conserving it

词汇（本题共10小题；每小题1分，满分10分)
【小题1】Swallows fly back to the ____________ part of the country in winter every year.(南方)
【小题2】The space sleeping bag is fixed to the walls to prevent ____________.（飘浮）
【小题3】I am not sure whether the watches are those ____________.(绅士）
【小题4】You will get much ____________ if you give up eating fast food.(苗条)
【小题5】It is said that this kind of the car is____________ designed for her.(特别的)
【小题6】In winter you’d better keep____________ warm enough to stay healthy.(you)
【小题7】We ____________ could not believe our ears when we heard the surprising news.(simple)
【小题8】The water in the river is ____________. You can drink it without cooking.(harm)
【小题9】Works of MoYan is very popular among Chinese ____________ .(read)
【小题10】My daughter hopes to go abroad for ___________(far) study next year.

Many of us don’t pay much attention to the importance of eye care. It is said that if you take care of your body, then you can surely be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place.

There are several causes leading to poor eyesight like not enough food, genes(基因) and aging(老化). Televisions, computers and reading are also the causes of having poor eyesight. If you happen to work in front of the computer, it is best to have a rest after working for a while. Something dirty can cause redness and they will make you uncomfortable. It is bad for your eyes, too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful things. For example, sunglasses are not just for fashion but they can also serve as a great way to protect your eye-sight from UV rays.

Eating healthy foods will do good to your eyesight. Remember that vitamin A, C and E are good for eyes. Try to eat food groups that have these vitamins. And you should do eye exercises because exercise protects your eyesight, too. If a person exercises regularly(定期的) and eats the right kind of food, his eyes will stay in good condition(状况) for a long time.

All above are natural ways of eye care that help us keep healthy eyes. Being happy all the time can be helpful to a person’s eyesight, too. In a word, eye care is very important, no matter how old a person is.

1. is the most important way to protect our eyes.

A. Natural eye care B. Taking medicine

C. Seeing a doctor D. Being happy all the time

2. All the following causes can lead to bad eyesight EXCEPT_______.

A. age B. height C. reading D. computers

3.What should you do if you have to work in front of the computer?

A. Eat healthy foods.

B. Clean the eyes by using cold water.

C. Wear a pair of sunglasses.

D. Have a rest after working for a while.

4.What do the underlined words UV rays mean?

A. 沙尘 B. 闪电 C. 紫外线 D. 超声波

5.Which is the best title of the passage?

A. Ways of eye care B. Ways of eye exercises

C. Ways of Being Happy D. Ways of Being Healthy

—It is said that the scientists have found new ways to deal with AIDS.

— wonderful news it is!

A．How B．What an C．How a D．What

There are several causes leading to poor eyesight like not enough food, genes(基因) and aging(老化). Televisions, computers and reading are also the causes of having poor eyesight. If you happen to work in front of the computer, it is best to take a break every once in a while. Something dirty can cause redness and they will make you uncomfortable. It is bad for your eyes, too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful things. For example, sunglasses are not just for fashion but they can also serve as a great way to protect your eye-sight from UV rays.

1.__________ is the most important way to protect our eyes.

A．Natural eye care B．Taking medicine

C．Seeing a doctor D．Being happy all the time

2.All the following causes can lead to bad eyesight except__________ .

A．age B．height C．reading D．computers

3.What should you do if you have to work in front of the computer?

A．Eat healthy foods. B．Clean the eyes by using cold water.

C．Wear a pair of sunglasses. D．Have a rest after working for a while.

4.What do the underlined words UV rays mean?

A．沙尘 B．闪电 C．紫外线 D．超声波

5.Which is the best title of the passage?

A．Ways of eye care B．Ways of eye exercises

C．Ways of Being Happy D．Ways of Being Healthy

试题分类