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Silk (_______) by Chinese for thousands of years now.

时间:2021-10-25 10:01来源:未知 作者:admin 点击:
(单选题)13: Silk (_______) by Chinese for thousands of years now. A: has used B: has been used C: was used D: is used
(单选题)13: Silk (_______) by Chinese for thousands of years now.
A: has used
B: has been used
C: was used
D: is used
正确答案:♦B♦
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