―Hi, Sam. Have you seen Mr. Lin anywhere?

―He to a parent at the school gate when I saw him just now.

A. is talking B. was talking

C. talked D. has talked

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書(shū)面表達(dá)

假如你是張鵬，轉(zhuǎn)學(xué)去了杭州。你的好友王新來(lái)信詢(xún)問(wèn)你的近況，并告訴你他暑假來(lái)看你。請(qǐng)根據(jù)以下提示，給王新寫(xiě)一封回信。

寫(xiě)作要點(diǎn)：

1.表達(dá)你收到他來(lái)信之后的激動(dòng)心情。

2.介紹新學(xué)校。

(1)設(shè)施：一個(gè)大操場(chǎng)，一個(gè)圖書(shū)館。

(2)師生：友善，易于相處。

3.針對(duì)他如何與同學(xué)們?nèi)谇⑾嗵幪岢鼍唧w建議。

寫(xiě)作要求：

(1)不得使用真實(shí)的姓名和學(xué)校名

(2)課適當(dāng)加入細(xì)節(jié)，使內(nèi)容充實(shí)，行文連貫。

(3)字跡工整，語(yǔ)言精練，表達(dá)準(zhǔn)確，條理清晰。

(4)至少80詞。

Dear Wang Xin,

How are you doing? ___________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Zhang Peng

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Jim often goes to school ________ bike.But today he goes to school ________ the school bus.

A. on；by B. by；by

C. by；on D. on；on

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“We all think him so clever.” The main structure of the sentence is ___________.

A. S+V B. S+V+P C. S+V+O+OC D. S+V+IO+DO

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—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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I want to know if it __________ tomorrow. If it_____ tomorrow, we will have a picnic.

A. rains, will rain B. is rainy, doesn’t rain

C. will rain, will be rainy D. will be rainy; doesn’t rain

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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(duì)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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書(shū)面表達(dá)

你看過(guò)類(lèi)似的老人跌倒無(wú)人理會(huì)的新聞嗎？你又聽(tīng)說(shuō)過(guò)最美女教師救她的學(xué)生的故事嗎？對(duì)這兩種社會(huì)現(xiàn)象，你有什么看法呢？請(qǐng)你以“Would you like to help others?”為題寫(xiě)一篇短文。

內(nèi)容包括：1. 你對(duì)上面其中一件事的看法。

2. 如果你遇到了這樣的事情會(huì)怎樣做。

3. 講述你的一次類(lèi)似經(jīng)歷。

作文要求：1. 詞數(shù)80個(gè)左右。不得照抄原文；不得出現(xiàn)學(xué)校的真實(shí)名稱(chēng)和學(xué)生的真實(shí)姓名。

2. 條理清晰，語(yǔ)句連貫。

Would you like to help others?

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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– do you usually go to school?

– On foot. It’s good for my health.

A. How B. When C. Where D. Why

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