对下列“而”字的用法的判断，正确的一项是(　　)

①不得富而得贫，不得众而得寡　②亲者闻之，亦退而谋曰　

③圣王之为政，列德而尚贤　    ④美章而恶不生

滨江商厦：一律八折。友谊新天地：购物不足200元不予优惠；购物超过200元，超过部分六折优惠。标价500元的羽绒服去哪个商场买比较合适？

Teenagers growing pains

    Today, our students are facing many different problems and they want to ask some experts for help. Nancy says she feel stressed these days because of too much homework. She hasn't enough time to sleep for a long time and often falls asleep during the classes. John says he doesn't like to study because of the bad effect of computer games. Cindy says she gets fat because she likes to eat junk food and hardly ever takes exercise. Frank has the worst problem. He always fights with others as he doesn't know how to get on well with others and few of his classmates would like to talk with him.