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课时作业(八)UNIT2 答案解析P17 Period Three Lesson2&Lesson3一Comprehending(限时:4o分钟) I.阅读 According to the President's Council on 见 Fitness,Sports and Nutrition (PCFSN),students Physical education,or gym class,isn't who performed five hours of physical activity each required for all high school students.In some week improved their academic(学业的)performance. schools,it isn't offered for some different reasons. Students from programs with no physical activity, But should high school students have physical who used the extra time for classroom study,did education?The answer is certainly“Yes”. not perform better on tests than those who gave up Today many people don't do sports.But as is some study time in support of physical education. known to all,doing sports is very important for an 1.According to paragraph 2,what does physical adult.Teaching teens the importance of a healthy education in high school mean? lifestyle and making fitness plans now can help A.Helping teens learn to make good plans. teens put exercise in the first place as an adult. High school isn't that easy.Many students are B.Removing the stress faced by teens at school. under a lot of stress.Stress can be harmful to a C.Making teens attach importance to exercise later. student's studies and life.Doing sports can help D.Getting teens to encourage adults to exercise. them deal with stress better,helping them live a 2.What does the underlined word“hindered”in happier life at school. paragraph 5 mean? The American Heart Association says that 10 A.Measured. B.Prevented. million kids and teens suffer from obesity(肥胖 C.Shown. D.Caused. )Teens should get 60 minutes of physical 3.What can we infer about doing sports according activity per day to control their weight and to help to the PCFSN? their bones get stronger.The increase in activities A.It means making students choose between that don't get teens to move around,such as video sports and studies. games and computer activities,means many teens B.It helps students ma