Question

______ trees were cut down. And many birds lost their home.
A. Two thousands  B. Thousand of   C. Thousands of

Answer 1

C

试题分析：句意：成千上万棵树被砍伐。许多鸟类失去了他们的家。在表示确切数字时，thousand不用复数，也不与of连用，但表示概数时，thousand必须使用复数形式，并且与of连用。所以选C。