Many parents are concerned about the fact that their children play many video and computer games. Perhaps the best way to address concerns over the effects of video games is to emphasize their vast potential to educate. Even games with no educational intentions require players to learn a great deal. Games are complex, adaptive and force players to make a huge number of decisions. Gamers must learn rules through trials and errors, solve problems and puzzles, develop strategies and get help from other players via the Internet when they get stuck. The problem-solving mechanism that underlines most games is like the 90% of an iceberg below the waterline - invisible to non-gamer. It is the pleasure of this problem-solving, not the violence which is sometimes included in games, that can make gaming such a satisfying experience. Nobody is using violent games in schools, of course, but other off-the-shelf games such as "Slim City", which contains model economies, are used in education. By playing them it is possible to understand how such models work. In “Slim City", for example, in which the player assumes the role of a city mayor, no amount of spending on health care is ever enough to satisfy patients, and the fastest route to popularity is to cut taxes.

(Adapted from Essential reading for IELTS)

Question 31: Which best serves as the title of the passage?

1. Playing video games: a way to study
2. Parents should encourage their children to play video games.
3. Playing video games: bad effects on children
4. Parents need to know what video games their children play

Question 32: Which of the following statements is NOT true?

1. The writer believes that video games which are not designed to be educational can still encourage children to learn.
2. The writer thinks we need to see the educational points provided by video games.
3. The players must know the playing rules when playing video games.
4. Games are not difficult to play, so children don't have to think a lot.

Question 33: Which of the following things can't be realized by non-gamers?

1. Learning rule through trials and errors B. Problem-solving mechanism
2. Solving puzzles D. Getting help from other players

Question 34: Which element sometimes makes gamers satisfied?

1. Problem-solving mechanism B. Puzzles
2. Violence D. Trials and errors

Question 35: The word "mayor" refers to ______ ?

1. The city leader B. The city citizen C. The city hall   D. The city center