题目

下列过程中，涉及肽键数量变化的是     A．洋葱根尖细胞染色体的复制     B．用纤维素酶处理植物细胞     C．小肠上皮细胞吸收氨基酸       D．蛋清中加入NaCl使蛋白质析出 答案：A After a heated discussion at the meeting, a new plan came ______ being, which would have a great effect ______ the culture life of the people.A．into; forB．to; toC．from; atD．into; on