He pretended __________when his mother steppe...

He pretended __________when his mother stepped into the room..

A.to study           B.studying          C.to be studying     D.to have studied

高三英语单项填空中等难度题查看答案及解析

When Denis wants to relax at work, he steps into a quiet room, sits in a chair, slips on a virtual-reality headset, and escapes to the beach. For Denis, those minutes are a tool he relies on regularly to both relieve and prevent stress.

He's not the only one at his company to use the room, where workers can also use a headset to watch a moon walk, take a virtual roller-coaster ride or access a meditation (冥想) app.

Research shows VR can help reduce pain and anxiety. But it's not yet clear why it works. Experts believe it's related to the technology's power to distract.

''Whatever their problems are, whatever their stresses are, they can literally neglect them and have a different emotional pulse, '' Denis said.

Virtual-reality headsets haven't taken off with consumers, but they're now powerful and inexpensive enough for companies to consider investing in them to help make workers and customers happier.

The headsets may help people take a virtual break from their surroundings, but there are challenges to consider. Ramon Llamas, a tech market researcher, noted that there could be challenges in handing out headsets. Some people get sick or dizzy while using virtual reality, and the headsets may get dirty or broken. There's also the task of quickly familiarizing people with using the headsets, especially since VR adoption has been so limited and the ways they are controlled can vary.

For now, Llamas said, he's concerned about privacy and security. What if, for instance, someone manages to back into a headset and insert some content into what you're watching?

Another potential issue is the managing of the headsets and software that goes along with them. This is likely not a complication for an office like Umber Realty's, where people can simply take a headset off if they feel something wrong. But it could be more of a problem if you're stuck in a dentist's chair. ''The last thing you want is that in the middle of extracting a tooth something goes wrong.'' Llamas said.

1.What does Denis's company use Virtual Reality for?

A.Improving the customers' experience.

B.Displaying the schedule of his company.

C.Relieving the staff's work pressure.

D.Saving the trouble of transportation.

2.How can the VR devices help the users by Denis?

A.Ignoring reality for the moment. B.Improving their thinking.

C.Designing work for the company. D.Investing in a new industry.

3.What does the author focus on in the last three paragraphs?

A.The potential problems with VR.

B.The privacy policy available for VR.

C.The management of these devices in the market.

D.The standards the VR technology is to follow.

4.What is the best title of the passage?

A.VR, a promising business in future! B.Is VR always making us relax?

C.The adoption of VR needs investments. D.Are we saying ''goodbye'' to VR?

高三英语阅读理解困难题查看答案及解析

. The boy was sitting at the desk, ______ hard when his mother got home.

A. to pretend to work              B. to pretend to be working

C. pretending to work            D. pretending to be working

高三英语单项填空简单题查看答案及解析

Hearing mother’s step, the children pretended ___.

高三英语单项填空简单题查看答案及解析

47. ____ in thought, he didn’t notice me when I came into his room.

高三英语单项填空简单题查看答案及解析

Tom hid himself behind the door, _________ he could hear the steps of his mother clearly.

A. from which            B. from where                     C. where                               D. which

高三英语单项填空中等难度题查看答案及解析

He stepped into the dark cave, _______ high above his head.

A. holding a burning stick             B. held a burnt stick

C. holding a burnt stick                      D. held a burning stick

高三英语单项填空简单题查看答案及解析

The old man fell down the front steps, knocked his head, and lost ________; when he woke up, he was back in his house.

A. consciousness　 B. balance

C. confidence　　 　 D. contact

高三英语单项填空中等难度题查看答案及解析

The moment he came into his room, he ______ something wrong, though he couldn’t tell.

A. noticed                            B. sensed                    C. felt                           D. smelt

高三英语单项填空简单题查看答案及解析

All his attention _____ on the computer game, he even didn’t notice his mother enter the room.

A. has been fixed  B. was fixing  C. was fixed    D. fixed

高三英语简单题查看答案及解析