牛奶中的蛋白质主要是()。
A.低聚糖
B.胚芽
C.胚乳
D.酪蛋白
E.乳清蛋白
参考答案:D
周末,小阳在家看电视,当她再打开电风扇时,电路中的总电流 ______,总功率 ______.(“变大”、“不变”或“变小”〕
The doctor ______ Mrs. Black carefully and told her nothing was wrong with her. [ ]
A. looked up
B. looked over
C. looked for
D. looked like