问题
多项选择题
下列哪些与母乳抗感染的作用有关()
A.分泌型IgA
B.乳铁蛋白
C.双歧因子
D.特异性抗体
E.乳白蛋白
答案
参考答案:A, B, C, D
下列哪些与母乳抗感染的作用有关()
A.分泌型IgA
B.乳铁蛋白
C.双歧因子
D.特异性抗体
E.乳白蛋白
参考答案:A, B, C, D
补全对话。 | |
A: 1______ B: I'm reading a book on population. It says 259 babies are born every minute. A: 2______ I can hardly believe it. Multiply this by (乘以) 60, we'll have 15,540 babies on the earth in an hour. B: 3______ Hour after hour, day after day, just think how many more people there will be in one year. The world's population is increasing fast. A: The population in less developed countries (欠发达) is growing faster than that in developed countries, isn't it? B: 4______ Population is a greater challenge (挑战) in developing countries than in developed countries. A: 5______ B: Yes. The State Family Planning Commission (委员会) of China was founded in 1964. The population increase rate (入口增长率) had dropped from 23% in 1953 to 11.35% in l965.
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