单项选择题

A．They don’t enjoy swimming.
B．They won’t go swimming in the lake today.
C．They don’t know how to swim.
D．They’ll swim in the lake tomorrow.
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单项选择题
In U. S., ______of the white-collar jobs will disappear or alter in the next 10 to 15 years.
A．98.5%
B．90%
C．50%
D．37%
问答题
上图所示为中国近几年的科学创新情况，请描述其变化2.请说明发生这变化的原因3.对此进行预测 Scientific Breakthroughs in China________________________________________________________________________________________________________________________________________________________________________________________________________________________
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