题目内容
( ) 5. There are _______ living things on the earth. We must value our home—the earth.
A. million B. millions
C. millions of D. million of
5.C millions of意为"大量的，数以百万计的……"。
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题目内容
( ) 5. There are _______ living things on the earth. We must value our home—the earth.
A. million B. millions
C. millions of D. million of
5.C millions of意为"大量的，数以百万计的……"。