High cholesterol foods include____.
A. eggs, meats and milk products
B. potatoes, green vegetables and tomatoes
C. corn, wheat and beef
D. sugar, rice and butter
According to the passage, people could reduce the chance of suffering heart attack by _______.
A. eating less foods with a lot of cholesterol
B. eating less of low cholesterol foods
C. eating a lot of high cholesterol foods
D. eating drugs
《义勇军进行曲》的词作者是______。
A. 聂耳
B. 冼星海
C. 田汉
D. 光未然
Access的表中，下列不可以定义为主键的是( )。
A. 自动编号
B. 单字段
C. 多字段
D. OLE对象
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