10. Of over 6,000 languages once spoken in the world, an estimated __________ today.
(A) exist 3,000
(B) 3,000 exist
(C) there are 3,000
(D) existing are 3,000

答案：登入後查看
統計： A(34), B(99), C(19), D(58), E(0) #1140660

詳解 (共 2 筆)

#1516734

應為B  

an estimated 3000 (languages) exist today.  

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#1517427
原本答案為A,修改為B
(共 13 字，隱藏中）
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