A.5A
B.5A
C.5/2A
D./2A
答案:C
身份指()的质量。以()表示。分为薄、稍薄、中等、稍厚、厚。
—Let’s play _________football instead of playing _______ violin. —Good idea.
A.the, the
B.a, the
C./ , the
D.the, /