问题
选择题
It will take ________ years to make robots ________ the most unpleasant things.[ ]
A. hundred, do
B. hundreds of, to do
C. two hundreds, to do
D. hundreds of, do
答案
答案：D
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It will take ________ years to make robots ________ the most unpleasant things.[ ]
A. hundred, do
B. hundreds of, to do
C. two hundreds, to do
D. hundreds of, do
答案：D