【導(dǎo)讀】Countries發(fā)展中國(guó)家和發(fā)達(dá)國(guó)家。A.closely;closeB.close;close. C.closely;closelyD.close;closely. A.a(chǎn)t;heardB.in;tohear. A.willincrease;byB.havebeenincreasing;to. C.haveincreased;toD.wouldbeincreasing;by. C.laid;thatD.laid;what