阅读理解，阅读下列短文，然后从A、B、C、D四个选项中选出能回答所提问题或完成所给句子的最佳选项。

　　Everyone knows that exercise is important．We need to exercise．Doctors say it is good for us．It keeps our bodies strong．

　　When the daytime comes, we must get up．This is the time for exercise．Exercise means doing things with the body．There are many ways to exercise．You can walk, run, swim, skate, or play ball games．Make sure you exercise in the following ways：you have to like what you’re doing．Exercise enough-but not too much．It is good to exercise twice each week．Thirty minutes each time is enough．Try all kinds of things until you find one, two or three sports that feel right for you．

　　Exercise can be fun．Friends can exercise together at fitness center, or they can play sports together．How do you exercise?

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阅读下列材料，从每题所给的四个选项(A、B、C、D)中，选出最佳选项。

　　Ding－Dong!

　　“Jason, honey? Can you answer the door? ”

　　“I am busy, mom! ” Jason shouted back at his mother．He had spent three hours so far working to this point in the game．He couldn'stop now．

　　Ding－Dong! Mom's footsteps approached the front door．

　　“Jason, it'your friend Todd．” Mom called from the doorway．

　　Todd, his best friend, stepped into the room．“Jason! I need a partner for playing basketball．” He sounded excited．

　　Jason snorted．“No way, Todd．I'm playing a game here．”

　　Jason gave his friend a dirty look, and his character in the game almost got killed while he looked away, “I almost died because of you! ”

　　Todd looked at Jason's mother．Jason'mother looked back at him．They both looked at Jason．“Why don't you play basketball with your friend? ” Jason'mother suggested．

　　“Tomorrow, maybe…” There were more levels to beat tomorrow, though, Maybe he had played tomorrow．He had have to see what mood he was in．He thought he heard footsteps walking away, but he was too busy beating the next level to care．

　　An hour later, Jason'father came home．It was dinner time after his father washed up and sat down．Jason didn't even hear his name being called to the table．He didn't hear his father walk at behind him and ask him to turn the game off, either．

　　When the screen suddenly went black and his father'angry face loomed in front of him, Jason finally heard．“No more game for a month．” Jason's father shouted at him．“You don't play basketball, you don't come to dinner, and you don't do your chores．We'll make some everything else gets done before you play any more．”

　　Jason nodded slowly．He knew better than to argue with his father, and when he thought about it, he had been palying quite a bit．It was fun, but he was letting down his friends, his family, and himself by paying too much．

　　He'd try harder in the future．

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