题目

先化简，再求值:,其中x满足. 答案：解析:解：原式..................................    .................8分      原式.....................................    .................10分1.I’m _____( quiet) than Bob, but Bob is______(funny) than me .2.Tina is ________(heavy) than Tara, so Tara is _____(thin) than Tina.3.Tom is _______(friendly) and ________(outgoing) than Sam.4.Yesterday Dad came back home _______(late)than Mom.5.Tara sings songs as _______(clearly) as Tina.6.We decided ________(help) with housework.7.Mary _____ (buy) a sweater yesterday.8.I don’t feel like ______(walk) around the town.9.I have to _______(practice) the piano this evening.10.You don’t look well.You should look after your _______(healthy).