题目

某储运部紧急调拨一批物资，调进物资共用4小时，调进物资2小时后开始调出物资（调进物资与调出物资的速度均保持不变）．储运部库存物资S(吨)与时间t (小时)之间的函数关系如图所示，这批物资从开始调进到全部调出需要的时间是（    ）         A、4小时        B、4.4小时          C、4.8小时        D、5小时 Wang Ling, a middle school girl, felt angry with her parents after getting a boy’s phone call.“A classmate called me to discuss homework.We talked  1  just a few minutes before my parents got mad,” said the girl.“They asked whether I liked the boy.I said I didn’t,  2  they wouldn’t believe me.” Wang’s trouble is not strange at all because puppy love(早恋) becomes a big headache for  3  parents and schools.They worry that puppy love will be bad for  4 .Her school makes it a rule not to allow any talk or any physical contact(身体接触)  5  one boy and one girl alone. Many students say they understand  6  parents and teachers are so nervous about puppy love.But some think they are going too far.“We have our own thoughts and we know what to  7  with it,” said Wang Ling. Another girl, Jiang Ting, liked making friends with boys.” Boys and girls can learn from each other,” she said.” My mother asks me to study hard.However, she  8  stops me from making friends with boys.“once Jiang told her mother she might fall in love with a boy.Her mother let Jiang make  9  own decision.Soon Jiang found that she didn’t like him any more because the boy was not as  10  as what she had thought before.And she did wrose and worse in her subjects because she spent much on it.At last she understood the worry form schools and most parents about puppy love. 1.                A．for            B．in             C．with D．to 2.                A．because        B．if              C．but  D．and 3.                A．both           B．none           C．either    D．neither 4.                A．game          B．study           C．match    D．housework 5.                A．during         B．between        C．around   D．about 6.                A．how           B．what           C．who D．why 7.                A．play           B．live            C．do   D．fill 8.                A．never          B．already         C．ever D．just 9.                A．its             B．my            C．his  D．her 10.               A．good          B．bad            C．heavy D．thin