1.A 考点是复合形容词,复合形容词中名词一律单数,B改成three hours'就对了
2.A 从句意分析应该选转折副词
另外,本题可从词性上分析,B C均为介词词组,后方是谓语,不行;D是连词,选D则句子无主句.只有A是副词,修饰谓语.
3.考察虚拟语气的省略倒装
had creative thinkers heeded such counsel 是 if creative thinkers had heeded such counsel 的倒装形式(前提需要省略if)
4.be concentrated on
be absorbed in 注意介词搭配