问题详情:
Since 1964, _______ satellites have been sent into space.
A. dozens of B. four dozens C. dozen of D. several dozens
【回答】
A
知识点:数词
题型:选择题
问题详情:
Since 1964, _______ satellites have been sent into space.
A. dozens of B. four dozens C. dozen of D. several dozens
【回答】
A
知识点:数词
题型:选择题