课时作业(三) [必修1 Unit 3 Travel journal]
(限时：30分钟)
Ⅰ.[2012·广东卷]完形填空
We all know that some things are obviously right. For example, it is right to be __1__ to other people. It is also right to look after the environment. Some things are __2__ wrong, too. For instance, we should not hurt or bully (欺负) others, nor should we litter. Rules often tell us what is right or wrong.
Rules can help the public make the right __3__， and remain safe. Car drivers have to obey traffic regulations that tell them the right things to do on the road to avoid crashes. Cyclists who give signals before turning or stopping help prevent __4__．
If people follow rules without taking other matters into consideration, it will be __5__ for them to form what is sometimes called a “black and white” view. For example, they may believe that people should always tell the truth, and that lying is __6__ acceptable. Such people always stick to their views, even if it means that they may get into __7__．
Sometimes it may not be so easy to know __8__ what is right or wrong. Some people choose not t
