题目

To keep healthy，Professor Johnson____ cycling as a regular form of exercise after he retired. (NMET 2004上海卷第54题) A. took up       B. caught on     C. carried out     D. made for   答案：A在下面横线上写出一个句子，使之与前面的文字构成排比句。 太阳无语，却放射出光辉；高山无语，却体现出巍峨；________，________；________，________。