第19题: [单项选择]Staying in a hotel costs______renting a room in a dormitory for a week. A. twice as much as B. twice than C. as much twice as D. as much twice 参考答案:A 答案解析:[考点] 比较状语从句 [解析] 此题主要考查表达倍数的句型结构“…times+as+a.+as…”,意为“……是/为……的几倍”。对照以上结构,只有A)符合句意。
第27题: [单项选择]23,46,77,116,( ) A. 163 B. 144 C. 138 D. 122 参考答案:A 答案解析:[解析] 这是一道二级等差数列。规律为:数列相邻两项做差得到一个数列23,31,39,(47),新数列构成一个公差为8的等差数列,因此,( )=116+47=163。故选A。