Playing video games can be a fun way to relax or spend time with friends. In some schools, teachers use games like Minecraft to encourage teamwork and communication.

But for some players, gaming is an unhealthy habit. They stay up late playing games. They do little or no homework. They give up other hobbies and pay little attention to their families and friends. The video-game world seems a friendlier place than the real one.

Mental health experts have taken notice of this problem. The WHO added game disorder (障碍) to its list of health condition. A person may have the disorder if games have done harm to his relationship with families and friends, or if it has influenced his daily activities. Clifford Sussman treats games addiction (瘾).He says that children who have the game disorder often get angry when a parent stops them from playing games.

Then what makes video games addictive? Here is the answer. Playing video games makes players excited. After a while, the players become numb (麻木的).Then they lose control of themselves, so they play even more. Clifford says that players should take at least an-hour-long break after playing video games for an hour. Their brains need time to recover. Clifford advises young players should answer a simple question: “Are you in control, or is the game in control?”

1.The writer develops his idea in Paragraph 2 by .

A.using an expert’s opinion B.describing his personal habits

C.giving some examples D.introducing the result of a survey

2.What may Clifford Sussman be?

A.A teacher. B.A driver. C.A worker. D.A doctor.

3.Who will probably have the game disorder?

A.Emily who is tired of playing the same video games.

B.Bob who plays video games until 4:00 a.m. almost every day.

C.Alice who likes using her smart phone to listen to music sometimes.

D.Simon who plays online games with his classmates only on weekends.

4.By answering Sussman’s question, we may know .

A.how to fight gaming addiction B.why to fight gaming addiction

C.what gaming addiction is D.if we have gaming addiction

5.What is the best title for this passage?

A.Game Addiction B.Game and Study

C.Difficult Schoolwork D.Smarter Game Players

Butterflies are some of the most beautiful insects in the world. However, what interests the scientists most is not their fascinating looks, but how they sense nature. They use their senses of sight, touch, hearing, smell and taste to find food, lay eggs in good places and avoid hungry enemies.

Butterflies have large compound(复合的) eyes. No matter where the things are, they can see them without turning their heads. 1. They are more possible to notice a sea of flowers than a single plant. Butterflies do not "see” colors. They are color blind. 2.The light on many flowers guides butterflies to honey.

How do butterflies smell? Butterflies have a very well-developed sense of smell, but it is not in their noses, since they don't have one. Sense organs (器官)are in their feet, and many other parts of the body.3.

Do butterflies use their mouths to taste the food they find? Not really. Butterflies' feet have sense organs that can taste the sugar in flower honey. They let the butterflies know if there is something delicious. 4.They feed their babies using a long tube(管道),and they get all their food from this tube as well.

Butterflies don't have ears. Instead, they “hear" sounds through their wings by sensing changes in sound vibrations(震动).Butterflies' body is covered with sensory hairs. 5..For example, the hairs give butterflies information about the wind when they're flying. And where there is rain, the hairs can also tell butterflies.

The scientists say that butterflies may have senses we don't even know about yet, because their body is very different from ours. Therefore, it is difficult to understand when we use our own human senses to study it.

A. Like most insects, butterflies are very nearsighted.

B. They can let butterflies feel the environment around.

C. So it is not difficult for butterflies to find flower honey.

D. But they can sense sunlight, which tells them the direction.

E. They can help butterflies find their favorite flower honey food.

F. Some female butterflies taste the plants carefully to find places to lay eggs.

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