My grandpa ­_________ lanterns for Lantern Festival now.

A. is making   B. made   C. was making  D. make

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科目：初中英語 來源：北京市九年級(jí)期末考試英語試卷 題型：閱讀單選

Virtual (虛擬的) reality is a way to create a computer-made environment that brings the user into a virtual world. If you ever have put on a VR headset, you would know exactly what I am talking about. From an experiential view we do understand the idea, but what about the technical backend that goes into making it all possible? In this blog, we will understand the technology behind virtual reality and the basic terms about the development of a virtual ecosystem for a VR headset.

The primary subject of virtual reality is simulating (模擬) the vision. Every headset is to perfect their method to create an immersive (浸入式) 3D environment. Each VR headset puts up a screen or two in front of eyes, keeping the user away from any interaction with the real world. Two autofocus lenses (自動(dòng)對焦鏡片) are generally placed between the screen and the eyes that change based on eye movement and positioning. The vision appears on the screen either by using a mobile phone or HDMI line connected to a PC.

To create a truly immersive virtual reality, there are certain requirements — a frame rate (幀率) of at least 60 fps, a refresh rate and at least 100-degree field of view ( though 180 degrees is perfect). If either of these doesn’t work according to the standards, the user will experience too big of a time difference between their actions and the response from the screen. We need the response to be less than 20 ms ( 1/1000 second) to fool the brain which is achieved by joining all the above in the right proportion (比例). Another matter that needs to be looked at here is to prevent netsickness because of the differences between the frame rate and refresh rate.

Apart from the image, there are certain other things that go into creating an immersive VR experience, holding the user’s attention completely in the virtual environment. For example, sound effects, when put with the image, can create very attractive effects. By using a headphone and 3D sound effects, the user can totally believe in the virtual environment. While perfecting sound effects, proper care needs to be taken about the consistency (一致) between the pictures and the sound. If you start playing frightening music in the background of a happy scene, it will just put the user off.

In future, we will see rapid progress in creating a truly immersive digital experience. With leading players like Google, Microsoft, Oculus, and HTC making great efforts to improve the capabilities (性能), we are not far from achieving a virtual reality that would feel so much better than the real world. If you would like to develop a VR app for your business, then feel free to get in touch. With over 10 years of experience in mobile technologies, we can make every dream a reality.

1.A VR headset helps the user _________.

A. create the vision on the screen

B. understand the technical backend

C. better experience a 3D environment

D. keep interaction with the real world

2.The words "put the user off" in Paragraph 4 probably mean "__________".

A. take the user’s attention away

B. get the user interested

C. hold the user’s imagination back

D. help the user understand

3.What is the main purpose of writing this passage?

A. To give a short introduction of VR.

B. To do business with certain readers.

C. To predict the bright future of VR.

D. To share experiences with readers.

4.What can we learn from the passage?

A. The lower degree field of view, the better images.

B. Sound effects are more important than the image for VR.

C. Some big companies may create a VR better than the real world soon.

D. The brain can tell the time difference when the response is more than 20 ms.

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科目：初中英語 來源：牛津譯林版七年級(jí)英語下冊Unit 6　Outdoor fun 單元測試卷 題型：材料作文

書面表達(dá)

請根據(jù)以下表格內(nèi)容，描寫湯姆的幾個(gè)朋友上周末所做的事情，可適當(dāng)發(fā)揮想象。60詞左右，開頭已給出，不計(jì)入總詞數(shù)。

Tom's friends

What they did

Time

Nancy

Went to a park

On Saturday

Kevin

Played

basketball

On Saturday morning

Swam

On Saturday afternoon

Julie

Went to the

movies

On Sunday morning

Studied for

a test

On Sunday afternoon

Sally

Helped Henry

clean the room

On Saturday

What Did They Do?

Tom visited his uncle last weekend. What did his friends do? Let me tell you.________

________________________________________________________________________

________________________________________________________________________

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科目：初中英語 來源：牛津譯林版七年級(jí)英語下冊Unit 6　Outdoor fun 單元測試卷 題型：單選題

—The juice is ________ sweet.

—Yes, but don't drink ________．

A. too much; much too B. too much; too much

C. much too; too much D. much too; much too

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科目：初中英語 來源：廣東省博羅縣2017年秋季學(xué)期期末教學(xué)質(zhì)量檢查七年級(jí)英語試卷 題型：閱讀單選

Lisa is a 25-year-old woman. She works in a company. She is a busy woman. The computer plays an important part in her daily life. She spends a lot of time in front of a computer every day. In the morning, she reads news on the computer for one hour and then she works for three hours. In the afternoon, she works on the computer for about four hours. When she gets home in the evening, she still sits in front of her computer. She plays games or talks with her friends on the Internet. Sometimes she buys things, such as books and clothes on the Internet. She says that she cannot live without computers in her life.

1.How old is Lisa?

A. She is twenty. B. She is twenty-five.

C. She is twenty-four. D. She is twenty-two.

2.Where does Lisa work?

A. In a company. B. In a school.

C. In a hotel. D. In a hospital.

3.How long does Lisa work a day?

A. About three hours.

B. About four hours.

C. About five hours.

D. About seven hours.

4.What does Lisa usually do on the computer in the evening?

A. She reads news. B. She works.

C. She listens to music. D. She plays games.

5.Which of the following is TRUE?

A. Lisa is not happy with her daily life.

B. The computer is important in Lisa’s life.

C. Lisa enjoys working in her company.

D. Lisa often uses the computer to print documents.

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科目：初中英語 來源：廣東省博羅縣2017年秋季學(xué)期期末教學(xué)質(zhì)量檢查七年級(jí)英語試卷 題型：單選題

I ________ math but I like English.

A. like B. likes C. doesn’t like D. don’t like

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科目：初中英語 來源：廣東省博羅縣2017年秋季學(xué)期期末教學(xué)質(zhì)量檢查七年級(jí)英語試卷 題型：單選題

—Where_________ you from?

—Lily __________ from England and I _________from China.

A. is; are; am B. are; is; am

C. is; is; am D. are; is; are

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科目：初中英語 來源：外研版英語八年級(jí)下冊 Module 4 Seeing the doctor 單元檢測題 題型：完成句子

根據(jù)漢語意思完成英語句子，每空詞數(shù)不限。

1.這就是我沒趕上火車的原因。

________________ I didn’t catch the train.

2.我妹妹感冒了，沒有去上學(xué)。

My sister ________________ and didn’t go to school.

3.不要吃太多快餐食品，它對你的健康有害。

Don’t eat too much fast food. It ________________ to your health.

4.他太累了，不能跑了。

He’s ________________.

5.她有兩個(gè)孩子，她每天帶他們散步。

She has got two children. She ________________ every day.

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科目：初中英語 來源：陜西師范大學(xué)附屬中學(xué)2018屆九年級(jí)六模英語試卷 題型：話題作文

書面表達(dá)

每個(gè)人都有自己的夢想和理想，為了理想而努力可以成就一個(gè)人的事業(yè)。請根據(jù)提示內(nèi)容，以“My Dream”為題，寫一篇英文短文，向同學(xué)們介紹一下自己的夢想。

要求：1.參考提內(nèi)容，可適當(dāng)發(fā)揮

2. 語句通順，意思連貫， 書寫工整

3. 文中不得出現(xiàn)任何真實(shí)（姓名、校名和地名等）；

4. 詞數(shù)：不少于70詞。（開頭和結(jié)尾已給出，但不計(jì)入總詞數(shù)。）

My Dream

Everybody has his dream. My dream is to be________________________________________________

____________________________________________________________________________________________

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