3D printers are certainly the superstar today...

3D printers are certainly the superstar today---they are being put to all kinds of uses, including creating model cars for movies. However, none of these ideas are as crazy as the one suggested by Anjan Contractor, who believes that they will be the key to ending world hunger（饥饿）.

If you think that sounds a little crazy, you are not the only one, but after hearing scientists, the idea seems to become true.

According to scientists, food will become extremely expensive and possibly, even out of reach, for billions of people in the future. It means billions of people won’t have enough food.

This is where 3D printers may save the day. Anjan, an engineer says that the only way to support the large population will be to provide every kitchen with a 3D printer and print out meals.

More importantly, it would be to make the basic food from things that we now do not think can be eaten. Anjan thinks that we could easily get the meat protein(蛋白质) from insects（昆虫）. Similarly, the vegetable nutrition（营养）could be made from greens like grass. Would you want to try 3D printed food?

1.The craziest idea is that 　　　　　　 according to the passage.

A. 3D printers are used to create model cars.

B. 3D printer are used for architectural models.

C. 3D printers will be the key to ending world hunger.

D. 3D printers are the superstars today .

2.The underlined word “extremely” here mean 　　　　 .

A. very　　 B. a little　　 C. little　 D. so

3.When there isn’t enough food in the future, 　　　　 may save people.

A. only 3D printers

B. only the scientists

C. the kitchens with 3D printers

D. the vegetable nutrition

4.Anjan thinks that we can get the meat protein from 　　　　　 in the future.

A. grass　　 B. insects　　 C. animals　　 D. plants

5.From the passage we know that 　　　　　　 .

A. people will have enough food to eat in the future.

B. scientists can use 3D printers to print food now.

C. 3D printers are being put to many uses

D. people can get any food and vegetables without planting

九年级英语阅读理解中等难度题查看答案及解析

Today we are developing a new idea—Money is the measure of all things. More and more, people are being judged by what they own, and not by their good qualities. This is certainly true among many people in China.

According to a survey that was done in 2013, China is the most materialistic(物欲的) country in the world. Twenty-three percent of Chinese said they measured success by the things they owned (cars, homes, jewelry, designer clothes) compared with just 21 percent in America, 20 percent in Canada, and 16 percent in Britain.

This love of materialistic has spread into schools where some kids like to show off their Apple Watches, iPhone7 and expensive running shoes. Some poorer students now feel worried by their richer classmates and sad by their poor families. In some cases this has affected their performance in school.

But having rich parents doesn’t automatically(自动地) bring good grades and having poor parents doesn’t certainly bring bad grades. It is hard wok that is the key to success, not the cost of your running shoes. And hard work is what develops good characters, not money, that should be the measure of all things.

1.What is the measure of all things for many people in China?

A. Success.　　 B. The good quality.　　 C. The good grades.　　 D. Money.

2.According to the survey, how many Chinese judged success by the things they owned?

A. 23% of Chinese.　　 B. 21% of Chinese.　　 C. 20% of Chinese.　　 D. 16% of Chinese.

3.Why do some students like showing off expensive things in school?

A. Because their families are very rich.

B. Because of the worship of materialism.

C. Because expensive things can bring good grades.

D. Because they are good at all kinds of subjects.

4.What can we infer from the passage?

A. Poor students can hardly get good grades.

B. Rich students have the worship of materialism.

C. We should correct the worship of materialism.

D. Canadians have the least the worship of materialism in rate.

九年级英语阅读理解困难题查看答案及解析

----Are you the last one to go to school today ?

----_____ not. I’m always the first one.

A. Certainly　　 B. Usually　　 C. Generally　　 D. Finally

九年级英语单选题中等难度题查看答案及解析

— Are you the last one to go to school today?

— ______not. I’m always the first one.

A. Certainly　　 B. usually　　 C. Generally　　 D. Finally

九年级英语单项填空中等难度题查看答案及解析

一May I have a look at the magazine China Today?

一Certainly.

A. Here you are　　 B. It's a pity

C. Thank you　　 D. I'd like to

九年级英语单选题中等难度题查看答案及解析

–May I have a look at the magazine China Today?

--Certainly. _______.

A. Here you are　　　　　　 B. It’s a pity　　　　 C. Thank you　　　　 D. I’d like to

九年级英语单项填空中等难度题查看答案及解析

Modest men are never________ of the progress they have made.

A.proud B.afraid C.certain D.thinking

九年级英语单选题中等难度题查看答案及解析

3D printers are still _____ expensive for most of us ______ afford.

A. so, to                B. such, to　　     C. too, to                D. much, to

九年级英语单项填空困难题查看答案及解析

3D printers are still _____ expensive for most of us ______ afford.

A．so, to             B．such, to           C．too, to            D．much, to

九年级英语单项填空中等难度题查看答案及解析

The students’ life today can be very stressful (紧张的). They are under pressure (压力) every day. They need a (1)break from it. Parents should ask children to do something else. But not let them relax in front of the TV.　 A hobby is the perfect answer.

There are many different kinds of hobbies. Chess is a good example. It is a very enjoyable game and it also helps children develop their thinking skills.

Collecting something is also a good hobby for children. A child can collect almost anything:

key rings, stamps, postcards, old coins, etc. Many of these collecting can be both interesting and fun. They teach children a lot and broaden (开阔)their knowledge. For example, gardening (园艺) is a useful hobby because it is a physical activity and it also teaches children about nature.

(2) A hobby can be a useful learning tool. Children may become experts in something if they really love their hobbies. Children will also learn to become more organized and make places, for example in collecting something. Hobbies will also teach children a lot about responsibility(责任).

1.用一个适当的词替换（1）处划线的词。

______________________________________

2. 在短文中找出可以替换下面所给句子的一句话。

It is a good hobby for children to collect something.

______________________________________

3. How many kinds of hobbies can you find in this passage?

______________________________________

4. 在下面句子的横线上填上恰当的词，改写原文中的句子。

Gardening a useful hobby. Because it is 　　　　　　 a physical activity 　　　　　　 it teaches children about nature.

5.将文中划线部分（2）的英语句子译成汉语。______________________________________

九年级英语其他题中等难度题查看答案及解析