1. In earlier grades, the use of so-called token economies, in which students handle challenging problems and receive performance-based points toward valued rewards, shows promise in raising effort and creativity, the Delaware psychologist claims.
Q:The phrase "token economies" probably refers to___.
[A]ways to develop economy
[B]systems of rewarding students
[C]approaches to a solving problems
[D]methods of improving performance
2. The researcher then studied the videotapes to analyse the matches in detail.Surprisingly,he found that errors were more likely when the referees were close to the incident.When the official got it right,they were,on average,17 meters away from the action.
Q:The word "officials" most probably refers to ____.
[A]the researchers involved in the experiment
[B]the inspectors of the football tournament
[C]the referees of the football tournament
[D]the observers at the site of the experiment
3. There are several factors that contribute to wisdom．Of these l should put first a sense of proportion：the capacity to take account Of all the important factors in a problem and to attach to each its due weight．
Q:According to the author, "wisdom" is the ability to ____.
[A]carefully consider the bad effects of any kind Of research work
[B]give each important problem some careful consideration
[C]acquire a great deal Of complex and special knowledge
[D]give suitable consider action to all the possible dements in a problem