A:growing;having
B:grown;to have
C:grew;having
D:growing;and have
下列对胡萝卜素提取过程的分析正确的是( )
一个最简分数,分子和分母的和是9,这样的最简分数有( )个
不属于人体免疫功能的是
He always looks ________. Now he is looking ________at his new drawing.