题型:问答题 Since Tom_____ downloaded a virus into his computer, he can not open the file now.A.readilyB.horriblyC.accidentallyD.irregularly 查看答案
题型:问答题 下列因果关系叙述正确的是( )A.铁丝受力弯曲,体现了铁比较软的化学性质B.粉笔能在黑板上写字,是因为粉笔是白色的C.水的沸点能超过100℃是因为水面的气压超过了一标准大气压D.白磷能自燃是因为白磷没有着火点 查看答案