A. take over from exports B. take from exports C. take exports D. takes exports 参考答案:D 答案解析:[解析] 本题考查习惯搭配和动词的时态。take sth.as sth.为固定用法,意为“把……看做”。the middle class是集合名词,其作主语时,后面跟动词的第三人称单数形式。所以,答案
第33题: [多项选择]You are modifying the default route preference under the [edit protocols] hierarchy. In which two routing information sources can you change the default preference value?() A. local B. OSPF C. direct D. BGP 参考答案:B,D