1 . Sixty percent of Americans play video games daily, according to Techjury. In order to escape from the reality of quarantine (隔离), more people have turned to video games and VR (virtual reality) has become more popular than ever.

The world of VR isn't new to the gaming industry. It has been an ongoing concept for years, dating back to the 1800s. NASA popularized VR technology in 1989, bringing light to advancements that had never been seen before, and in 1991, SEGA introduced VR to gamers.

Gaming companies such as Oculus and HTC have redefined gaming by allowing players to involve themselves deeply in the world of VR through personal headsets. VR users are able to socialize through chat rooms, create 3D art and exercise through heart-pumping gameplay. Once a user puts on a headset, they are immediately transported into a virtual world. This allows the player to have a better experience compared to simply staring at a TV with a game controller.

Although VR has many positive aspects, using virtual reality too much can cause health problems among users. When using VR, it is common for people to lose spatial (空间的) awareness. Therefore, users are encouraged to play in an area that is clear of furniture and other objects causing potential danger. Eye strain can also be caused by using VR too much, so it is important to limit your time playing in virtual reality and take breaks in order to minimize the possibility of experiencing negative health effects.

How VR will develop in the future is unknown to us. However, new advancements for it are on the way. Teslasuit, a company specializing in VR equipment, is creating haptic (触觉的) suits for VR gameplay. These suits will allow users to feel aspects of VR while in game and will increase involvement, build 360-degree awareness and engage muscle memory. There are an endless number of possibilities that users                                               can experience and create in VR, and the boundaries of the virtual world are limitless.

1. The second paragraph is mainly concerned with _______.

A．the function of VR

B．the origin of VR games

C．the history of online games

D．the future of the gaming industry

2. Compared with playing games on TV, playing VR games enables players to______.

A．do physical exercise together in nature

B．have a more realistic gaming experience

C．enjoy better-quality pictures and sounds

D．play games without disturbing others

3. What does the underlined word “strain” in Paragraph 4 probably mean?

A．contact.

B．Movement.

C．Opening.

D．Damage.

4. What attitude does the writer hold towards the future of VR?

A．Negative.

B．Objective.

C．Confident.

D．Suspicious.