[单项选择]So involved with their computers ______ that leaders at summer computer camps often have to force them to break for sports and games. A. became the children B. become the children C. had the children become D. do the children become
参考答案:D 答案解析:[试题分析] 此题测试倒装句的运用。
[详细解答] 当so，such用于句首加强语气时，要用倒装句。本题中so involved with their computers位于句首，说明孩子们对电脑非
第16题: [单项选择]The reason why birds don't get lost on long flights ______. A. have been known to scientists for years B. have only recently been discovered C. are known by everyone D. will probably remain a mystery 参考答案:B 答案解析:本篇第一段说这个问题多年来使科学家迷惑不解，但随后又说：Now they are beginning to fill in the blanks，这里“逐渐开始填补这些空白”意为“逐渐开始对此有所了解
第23题: [多项选择]The NLS_SORT parameter sets the default sort method for which of the following operations?（） A. WHERE clause WHERE B. ORDER BY clause C. BETWEEN clause D. NLSSORT function E. NLS_SORT function 参考答案:A,D
