题干
As we should know, animals are not necessarily ________ lower form of life than ________ man.
A：a; the
B：the; the
C：a; /
D：/; /
答案(点此获取答案解析）
C
As we should know, animals are not necessarily ________ lower form of life than ________ man.
A：a; the
B：the; the
C：a; /
D：/; /
的最小值是（ ）
、
、
、
、
、
中，分式的个数是（ ）