Hong Kong-Zhuhai-Macao Bridge, the longest sea-crossing bridge, _________ in 2018.

A. will complete B. completed

C. will be completed D. was completed

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---_____ do you like giraffes?

---Because they’re very interesting.

A. What B. How C. Why D. Where

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—Would you like some fish? —________ I’m full.

A. Yes, please. B. No, thanks C. OK D. No, I don’t.

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- Lucy, ______ did you take this photo?

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A. why B. how C. Where D. when

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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.

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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

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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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- Lily, ________ you look after yourself while your parents are away?

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A. can B. need C. should D. must

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書面表達(dá)

76.積極鍛煉是非常重要的,為此,某英文報(bào)開展了一次關(guān)于初中生段煉情況的調(diào)查活動(dòng)。請你根據(jù)下列圖表和相關(guān)文字提示,以“Exercising is important!”為題,用英語寫一篇短文。

要點(diǎn)

具體內(nèi)容

調(diào)查數(shù)據(jù)

每天鍛煉的時(shí)間

不經(jīng)常鍛煉的原因

鍛煉的意義

有益身體健康;保持思維敏銳;變得自信快樂。

你的建議

就如何更好地開展鍛煉,提出你的建議(至少兩點(diǎn))。

注意:(1)短文應(yīng)包括所給內(nèi)容要點(diǎn),可適當(dāng)發(fā)揮,使文章連貫;

(2)詞數(shù)90左右,短文開頭已給出,不計(jì)入總詞數(shù);

(3)短文中不得提及考生所在學(xué)校及自己的姓名等信息。

(4)參考詞匯:敏銳的sharp

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This hole is so small that only one person can pass it ________.

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