过渡时期总路线的特征是_________。
GeneralMotors,oneoftheworld'slargestautomanufacturers,isexpandingits________inthiscountry.
SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.
某人向同一目标独立重复射击,每次射击命中目标的概率为p(0<p<1),则此人第4次射击恰好第2次命中目标的概率为（）
ItwasthreeBritishsportsmenwho________banneddrugs.
