¡¡¡¡In the United States, as already high gas prices rose 37 higher in the spring of 2008,the issue cropped up in the presidential campaign, with Senators McCain and Obama 38 for a federal gas tax holiday during the peak summer driving months.And driving habits began to 39 ,as sales of small cars jumped and mass transport systems 40 the country reported a sharp increase in riders.
¡¡¡¡21.A.come B.gone C.crossed D.arrived
¡¡¡¡22.A.covered B.discovered C.arranged D.ranged
¡¡¡¡23.A.intensity B.infinity C.insecurity D.instability
¡¡¡¡24.A.drawn B.redrawn C.retained D.reviewed
¡¡¡¡25.A.fighting B.struggling C.challenging D.threatening
¡¡¡¡26.A.and B.while C.thus D.though
¡¡¡¡27.A.confine B.conflict C.conform D.confront
¡¡¡¡28.A.problem B.question C.matter D.event
¡¡¡¡29.A.look for B.lock up C.send out D.keep off
¡¡¡¡30.A.no matter B.what if C.only if D.in spite of
¡¡¡¡31.A.abolishing B.depriving C.destroying D.eliminating
¡¡¡¡32.A.what B.that C.which D.whom
¡¡¡¡33.A.interests¡¡¡¡B.taxes C.incomes D.revenues
¡¡¡¡34.A.as many as B.as good as C.as far as D.as well as
¡¡¡¡35.A.Although B.Because C.Since D.As
¡¡¡¡36.A.advanced B.grew C. reduces D. multiplied
¡¡¡¡37.A.even B.still C.rather D.fairly
¡¡¡¡38.A.asking B.requesting C.calling D.demanding
¡¡¡¡39.A.change B.turn C.shift D.transform
¡¡¡¡40.A.for B.from C.across D.over