题目

 The teachers decided to ______ a more gradual approach in their teaching to meet the needs of the students who were a bit slow in learning. A. adopt                       B. analyze                   C. acquire                   D. adapt 答案：A现有氨基酸800个，其中氨基总数为810个，羧基总数为808个。由这些氧基酸合成的含有2条肽链的蛋白质共有肽键、氨基和羧基的数目依次分别为A. 798,、2 和 2 B. 798、12 和 10C. 799、1和 1 D. 799、11 和 9