下列属于内资企业所得税的纳税义务人的是（）
A.国有企业
B.集体企业
C.私营企业
D.联营企业
E.股份制企业
参考答案：A, B, C, D, E
按照生物的用途来划分，下列生物属于作物的是（ ）
A．杨树
B．玉米
C．杂草
D．小狗
Though some foreign scientists had a ______ opinion of his new invention, his fellow workers never thought ____ of it.
A．highly; low
B．low; high
C．high; highly
D．poor; highly
