用BSP方法制定企业信息系统战略规划，在BSP的研究步骤中作为其核心的是（）。 A.

人体的免疫功能，可清除自身的损伤细胞，在这一生理过程中，损伤细胞属于[ ]

A．病原体

B．抗原性物质

C．抗体

D．自身物质

电话银行密码忘记了怎么办？

醋酸菌将（）氧化为乙酸。

A.乙醛

B.乙醇

C.乙酸乙酯

D.己酸乙酯

(一) Today our knowledge of food and what it does for our bodies are far more advanced than that of the old times. Now we know about vitamins and how each kind of vitamin helps in the growth of a particular, the food that we eat will take care of our body and so there is no need to take any kinds of vitamins unless our doctor tells us that our bodies are short of something which can be supplied by them. Generally speaking, everything we eat does some good to our body. But if we eat too much of one kind of food and pay too little attention to others, we may have too much of one kind and not enough of others. Then we may be in trouble. We are often told that we must eat some meat at each meal in order to get the necessary proteins. That is only partly true, for proteins are not found only in meat. We can also get them from some vegetables. The best advice about what to eat is that we should eat all kinds of food but never too much of any.

Which of the following statements is TRUE______

A．All kinds of food are good to our health no matter how much we eat.

B．Meat is the best food of all.

C．Too much of any kinds of food is bad to one’s health

D．Vitamins are more useful than natural food.