题目内容：

    The World Health Organization recently said that it planned to add gaming disorder(游戏成瘾)to its new list of disease classifications, angering the gaming industry but pleasing doctors who hope it may make treatment more easily available.

Some US experts said it would make little difference when it comes to helping people with the disorder, although others said it would bring attention to a disorder that people sometimes don’t recognize. Many of us enjoy video games, but does playing our favorite game for a couple of hours every night mean we’re suffering from gaming disorder? Not, according to the WHO. The symptoms listed by the WHO include a lack of control over gaming, treating gaming more seriously than other life interests and daily activities, and continuing to play games despite the negative consequences that playing them might have. “The behavior pattern is enough to result in significant damage to one’s personal, family, or social life,”the WHO said.

Meanwhile, Douglas Gentile of Iowa State University has carried out influential research into the cause of gaming addiction in young people. “I and many others had assumed that gaming is not really a problem but is a symptom of other problems,”he told NBC News. Many had thought it was simply a failure of self-control.

To see if it was，Gentile’s team studied a group of children who had been gaming for several years. “We found that when kids became addicted，their anxiety increased…and their grades decreased,”Gentile said. When kids were able to back off from gaming, their symptoms disappeared, he added. Gentile thinks medical organizations should pay attention to the WHO’s proposal. “This isn’t an issue of opinion; it’s all issue of science,”he said. “This is a major scientific and medical organization. They don’t do things lightly and without reason.”

Dr Petros Levounis, chair of psychiatry at the New Jersey Medical School at Rutgers University, said that he hoped the WHO’s proposal would lead to more research into obsessive (过度的)behavior among all types of people. “Now，there is renewed interest and excitement,” he said.

1.Which of the following is a sign of gaming disorder according to the WHO?

A.Putting games before everything else.

B.Keeping playing until winning the games.

C.Playing games for several hours every night.

D.Having a few hobbies besides playing games.

2.Why is Gentile’s research mentioned?

A.To explain the cause of gaming addiction.

B.To show the influence of gaming disorder.

C.To show the reasons behind the WHO’ s decision.

D.To introduce the study that influenced the WHO’s proposal.

3.What can we learn from what Levounis said?

A.It needed further research to make it more convincing.

B.It would do little to help people with gaming addiction.

C.It would encourage new cures for gaming disorder.

D.It would encourage studies about similar diseases.

4.What does the author intend to tell us about gaming disorder?

A.Its description. B.Controversial views.

C.Its harmful effects. D.Explanations of the WHO’s decision.