Now people can pay by scanning(扫描）their faces...

Now people can pay by scanning(扫描）their faces while shopping. Is it _______ to pay by scanning other parts of our bodies? Amazon has a new technology that scans _______.

The technology can tell if the person is the right one by scanning his or her hand. The scanner examines things such as finger prints. It then sends a picture to a certain center which can decide who the person is.

In September 2019, Amazon made a payment system for a US supermarket. People can pay _______ by scanning their hands under a machine. Their hand scan is connected to their bank cards, so they can pay successfully. It's quite convenient, especially for _______ people. With this new technology, people _______take their cards with them. They just scan their hands.

1.A.possible B.important C.strange

2.A.eyes B.faces C.hands

3.A.usually B.simply C.really

4.A.old B.poor C.smart

5.A.mustn't B.can't C.needn't

九年级英语完型填空中等难度题查看答案及解析

　　　　 convenient the way is! We can pay money　　 scanning QR codes(二维码)in many shops.

A. How; for B. How; by C. What; by

九年级英语单选题中等难度题查看答案及解析

　　　　 convenient the way is! We can pay money　　 scanning QR codes(二维码)in many shops.

A. How; for

B. How; by

C. What; by

九年级英语单选题中等难度题查看答案及解析

Why Live Near the River?

Imagine pioneers traveling west in the 1800s. In those days, it was hard to find running water and shops where to buy things. As time went by, most pioneers had to make their homes near a river so that they could get water easily.

How did rivers help people live in the past?

Back in the pioneer days, people grew their own food, caught their own fish, and collected their own water.1. People also used rivers as roads, traveling on boats. Traders shipped goods (货物) to people from other areas.

2.

When building many factories right next to rivers for the water’s power to make machines work, some people choose to live near a river for working. They use the river to ship large goods, and some of them work at these factories where power factories provide electricity to homes and businesses.3.

Who wouldn’t want to live near a river?

Some people are nervous about living near rivers because rivers can cause floods (洪水). Every once in a while, floodwaters rise higher than a house, ruining (泡坏) many things in the house.

4.Such waste causes water to smell bad and pollutes the crops (庄稼) we eat. Water and crops in polluted areas can make people very sick.

How do people decide where to live?

5.Rivers can provide jobs and fun activities in a beautiful place. However, those living by rivers should be willing to accept possible problems as well.

A.Why do people live near rivers now?

B.Why did people want to live near a river?

C.Some factories put their waste into rivers.

D.Staying close to a river was easy to get water for living.

E.Some factories stop waste water from running into rivers.

F.People who carry goods onto ships live near the river, too.

G.People should think over the possible risks before deciding where to live.

九年级英语补全短文7选5中等难度题查看答案及解析

We can pay money by scanning QR(扫二维码). ________________ convenient invention it is!

A.What a B.What C.How D.How a

九年级英语单选题中等难度题查看答案及解析

Now people can _______ with their friends far away by email, cell phone or Wechat.

A. keep on　　 B. stay in touch　　 C. keep up　　 D. catch up

九年级英语单选题简单题查看答案及解析

What’s going to happen in the future? Will robots control our planet? Will computers become smarter than us? Not likely. But here are some things that scientists say are most likely to happen in 10-30 years from now, according to the BBC.

Bionic（仿生的）Eyes

They are no longer something, only in a science fiction movie. People who are blind may have a chance to see things clearly—by wearing bionic eyes.

A blind eye can no longer sense sight, but a bionic eye can use a camera to “see” the environment and send information to the mind. Now the bionic eye only allows patients to see lights and unclear shapes. A bionic eye with very clear pictures could be just in a few years away.

Digital Money

We used to pay with cash for everything we bought. Now we can use Wechat Pay or Alipay to shop, money is spent without seeing it. That means we are already using digital money. People only need to take a mobile phone wherever they go. Using these ways is much easier than searching our pockets for change. It is also safer than carrying a lot of cash.

It is reported that people in Sweden completely stopped using cash last year, and the US might be the next.

Self-driving Cars

Unlike a human driver, a self-driving car won’t be influenced by a phone call, the radio or something outside the window. Sensors（探测器）and cameras on the car would allow it to follow the rules of the road strictly and keep a safe space from other cars. This would greatly make the number of road accidents smaller. You can even take a short rest while the car drives itself. In the future, driverless cars would be widely accepted.

1.Which of the following payments is not mentioned in this passage?

A.Cash B.Wechat Pay C.Alipay D.Credit card

2.Bionic eyes send information to the________.

A.mind B.camera C.computer D.heart

3.From the report, we can learn some information about________.

A.industry and farming B.traffic and journey

C.science and technology D.culture and art

4.The passage tells us that________.

A.bionic eyes only appear in the science fiction films

B.the blind wearing bionic eyes may see clearly in the future

C.self-driving cars will be influenced by something outside

D.there will be no accidents at all if self-driving cars are used

5.We can infer（推断）that________ from the passage.

A.there would be a number of self-driving cars on the road B.robots would control the world

C.the blind could use glasses to see things around D.we would live a hard life with digital money

九年级英语阅读单选中等难度题查看答案及解析

Today, the world’s diversity(多样性) of food crops is quickly decreasing. But scientists around the world are taking action. They are building seed banks. At seed banks, scientists store the seeds of many different crops.

There are now 1,400 seed banks around the world. However, some banks are in warm countries. If the electricity fails, the seeds will get too hot and die. Other seed banks are in countries troubled by war. Sometimes people damage the seed banks. If this happens, valuable seeds can be lost forever!

The organization Global Crop Diversity Trust decided they wanted to deal with this problem. So, they decided to build a global seed bank. This seed bank would contain a back-up, or extra copy, of all the world’s seeds. Smaller seed banks would still collect and keep local seeds. But they would also send copies of their seeds to the global bank.

Scientists from the Global Crop Diversity Trust chose the cold, snowy mountains of Svalbard, Norway to build the global seed bank — the Svalbard Global Seed Vault. Organizations, farmers, or local seed banks store their extra seeds there. And the people who place their seeds in the vault are the only people who can take them out. They pay to ship their seeds to Norway, but it does not cost them any money to store their seeds. The Global Crop Diversity Trust pays for this.

Cary Fowler is a scientist who heads the Global Crop Diversity Trust. He said, “If the Seed Vault simply supplies seed banks with copies of seeds that those banks lost by accident, the Seed Vault will be worth way more than it cost.”

1.Seed banks are built to ________.

A.research on seeds B.produce new seeds

C.protect crop diversity D.increase the number of seeds

2.What is the author's purpose in Paragraph 2?

A.Scientists store the seeds of many different crops at seed banks.

B.If seed banks are destroyed, valuable seeds will be lost forever.

C.Scientists want to build a global seed bank.

D.The people who place their seeds in the vault are the only people who can take them out.

3.Compared with other seed banks, the global seed bank ________.

A.was built by the government B.is more welcomed by farmers

C.is mainly used by great scientists D.can provide a good environment for seeds

4.What can we learn about the Svalbard Global Seed Vault?

A.It helps to pay the shipping cost. B.No one can take seeds out of there.

C.There are no fees to store seeds there. D.It mainly receives seeds from farmers.

5.What is Cary Fowler’s attitude towards the Seed Vault?

A.He feels it is very important. B.He is surprised at it.

C.He thinks it costs too much. D.He is uncertain about it.

九年级英语阅读单选困难题查看答案及解析

In March, 2020, a1. of the students couldn't go to school as usual. They had to stay at home to have lessons on the Internet. Liu Ming is an English teacher. He changed the way of teaching English. He taught English online. In order to make his lessons more creative, he asked his students to hand i2. their homework through a OR code (二维码). Mr Liu said, "When students finish doing their homework, they keep it on WeChat. Then each student makes his/her o3. QR code and gives it to me. So I check their homework anywhere by　 4. (use) my mobile phone."

Mr. Liu can receive the homework by email, QQ and WeChat. When Mr Liu scans (扫描) his students' QR codes, their homework a5. on his phone. He finds that their homework becomes more colourful, with many pictures, music and even videos.

Liu Ming's students like the new way and think it is interesting. We are living in the information age. Many students like to work with 6. (computer). The homework on the paper is not easy to keep, but the code is easy to keep and share. Mr Liu said, "It's worth 7. (try) to use new technology in education. Education itself is a kind of creation. I don't want my students to fall behind the times."

However, some parents are 8. (worry). They are afraid that their children will spend too much time playing games and less time studying. But in fact, most of the students still pay more a9. to their lessons. For students, it doesn't take them too much time. For teachers, it allows them 10. (check) the students' work at any time. And it's also an easy way to share homework with other students.

九年级英语单词填空中等难度题查看答案及解析

根据短文内容, 从短文后的A~F选项中, 选出5个适当的选项补全短文。

Close friends, think alike?

"What! You, too? I believed I was the only one." Have you ever said something like this to someone? 1.

It seems that similarity often helps form friendship. The Greek thinker Aristotle once said, "People regard friendship as a matter of similarity; they say that we love those who are like our-selves." 2. Scientists from University of California said friends have similar behaviors, Scientific American reported.

The scientists invited 42 university students to take part in a test. Each student watched the same set of videos, which included a comedy, a discussion and a soccer match. 3.According to their scans, friends who watched the same video reacted in similar ways. Similar parts of their brains lit up while watching the videos, especially parts that are connected with motivation(动机), learning and memory. 4.

"Seeing one's friends have similar behaviors will reinforce(强化)one's own values, opinions, and interests," lead scientist Carolyn Parkinson told Business Insider. 5. Scientists from the University of Leipzig, Germany, found that friendship is also based on how physically close you are to someone. The scientists did a test with first-year college students the first time they met in class. In this test, students who sat in neighboring seats were more likely to become friends.

A.Now, there is some science behind this idea.

B.If so, you may have ended up becoming friends with this person.

C.Friends share a lot of similarities, though there are some differences.

D.But brain similarity is not the only thing that can result in friendship.

E.However, people who weren't friends had different reactions to the same videos.

F.At the same time, scientists scanned their brains and recorded their brain activity.

九年级英语补全短文6选5中等难度题查看答案及解析