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【简答题】
应用程序只能在( )态运行。
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举一反三
【单选题】What is implied but not stated in the passage is that in the past
A.
blue-collar workers made a better living than white-collar workers
B.
college and graduate schools trained more skilled workers
C.
there were more white-collar workers than blue-collar workers
D.
there were less white-collar workers than blue-collar workers