21. As for reducing expenditure and job growth, we can't afford to do just one or .other, we've got to do both, Mr Obama said at a town-hall meeting in Illinois before the 2012 Presidential election
A.the; the B.不填;the C.the;不填 D.不填;不填
22. The scientists in Jiaolong Module wondered how those sea species can .at the bottom of the deep sea with little food and no light
A. get up B.get off C. get in D. get along