Knowledge is power, but sometimes I feel thoughts are ________ than knowledge.

A. powerful B. more powerful

C. most powerful D. the most powerful

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科目：初中英語 來源：牛津譯林版2019年中考英語專題練習（8A Unit 8）2019年 題型：單選題

—We can’t enter the room. I can’t find my key.

—Is it possible that you ________ it at home?

A. left B. fixed C. managed D. designed

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科目：初中英語 來源：北京西城區(qū)2019屆九年級上學期期末質(zhì)量檢測英語試卷 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：北京西城區(qū)2019屆九年級上學期期末質(zhì)量檢測英語試卷 題型：單選題

－ It is too noisy outside. What’s up?

－ Oh, some children ________ football in the yard.

A. played B. will play

C. are playing D. have played

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科目：初中英語 來源：人教版八年級英語下冊單元檢測卷：Unit1 題型：材料作文

書面表達

你看過類似的老人跌倒無人理會的新聞嗎？你又聽說過最美女教師救她的學生的故事嗎？對這兩種社會現(xiàn)象，你有什么看法呢？請你以“Would you like to help others?”為題寫一篇短文。

內(nèi)容包括：1. 你對上面其中一件事的看法。

2. 如果你遇到了這樣的事情會怎樣做。

3. 講述你的一次類似經(jīng)歷。

作文要求：1. 詞數(shù)80個左右。不得照抄原文；不得出現(xiàn)學校的真實名稱和學生的真實姓名。

2. 條理清晰，語句連貫。

Would you like to help others?

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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科目：初中英語 來源：人教版八年級英語下冊單元檢測卷：Unit1 題型：單選題

The new kind of car is _____ dear, I don’t have _____ money.

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

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

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科目：初中英語 來源：北京市密云區(qū)2019屆九年級上學期期末考試英語試卷 題型：話題作文

榜樣的力量是無窮的。在我們身邊有許許多多的榜樣，勤勞的工人伯伯，辛勤的老師，熱情的同學，慈愛的父母......。某英文網(wǎng)站正在開展以“我身邊的榜樣”為主題的征文活動。假如你是李華，請用英語寫一篇短文投稿，談?wù)勀闵磉叺陌駱邮钦l，他（她）具有什么樣的品質(zhì)，你從他（她）身上學到了什么。

提示詞語：kind, helpful, warm-hearted ,hard-working, set a good example

提示問題：

Who is your role model?

What traits(品質(zhì)）does your role model have? Please give one or two examples.

What have you learned from him/her?

Everyone has a role model. ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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科目：初中英語 來源：2018-2019重慶市初一上期中試卷 2018年11月份 題型：單選題

—A set of keys ______ on the desk. ______ your mother’s?

—Oh, Yes. Thanks.

A. is; Are they B. are; Are they C. is; Is it D. are; Is it

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