7．When you laugh，you will（66）open （['??p（?）n]）your mouth and your teeth．The healthier those teeth are，the happier you look．Why is that？ It's because your teeth are important in many ways．If you take care of them，they'll help to take care of you．（67）Strong （强健），healthy teeth help you eat the right food to help you grow．They also help you speak clearly． You can take care of your teeth by doing like these： Brush your teeth （68）twice （[twa?s]） a day after breakfast and before bedtime．If you can，brush after （69）having lunch or after eating sweet cakes． Brush all of your teeth，not just the front ones．Spend some time on the teeth along the sides and in the back． Take your time while brushing．Spend at （70）least （至少） three minutes each time． Be sure your toothbrush is soft．Ask your parent to help you get a new toothbrush （71）every three month． Learn how to floss（用牙线清理） your teeth，which is a very important way to keep them healthy．It feels strange when you do it at first，but soon you'll get （72）used to doing it．The floss gets rid of food that's hidden between your teeth． Brushing and flossing （73）keep your teeth healthy．You also need to care about what you eat and drink．Eat（74）many fruits and vegetables and drink water （75）instead of （代替） drinks．
7．A．Now colleges and universities have become a big market for many banks．As a result，some students even have two or three credit cards（信用卡）． B．Though the Spring Festival is still months away，the railway station in Guangzhou is already crowded with migrant workers waiting for trains home． C．It's reported that 110，000people lose their lives to traffic accidents in China each year，making China have the largest number of traffic accident deaths in the world D．According to a recent survey in Shanghai，when asked whether they would give their seats to the old and weak on buses，79% of the pupils said yes，33% of the high school students said they were not sure and almost 17% decided they would not give up their seats． E．About three years ago，a team of tourists was shocked and disappointed to see the dry riverbed（河床）of Lijiang River in Guilin．
Match the information according to what you read． 57．It seems that drivers are mainly at fault：They drive after drinking，carry more goods than allowed and break the traffic rules．C 58．Because of the worldwide economic crisis（经济危机），they have to return home several months earlier than usual，and some may lose their jobs．B 59．The situation is not a special one in China．Many places now suffer from long droughts（旱灾），which are seldom seen in Chinese history．E 60．An important reason of choosing this group is that banks know behind the students are their parents．A 61．The survey result is actually a warning．Children are more likely to listen to what their parents tell about the manners．They need good examples．D．
阅读快车系列答案
