题目

若,则函数的两个零点分别位于区间( )A. 和内 B. 和内C. 和内 D. 和内 答案:【答案】A【解析】试题分析: ,所以有零点,排除B,D选项.当时, 恒成立,没有零点,排除C,故选A.另外,也可知内有零点. He wouldn’t leave the TV set, ________ he was going to have an important exam the next day. A. even if       B. as if        C. as though       D. even
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