17.Usually young people get themselves employed quite _________,not knowing what lies ahead after graduation in the serious labor market (劳动力市场).( )
A. | in time | B. | in turn | C. | by design | D. | by accident |
16.China is the world's most populous country with a population of 1.37 billion,which accounts for ________ one fifth of the whole world.( )
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A. | slightly | B. | approximately | C. | globally | D. | harmfully |