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举一反三
【单选题】Passage Two In 1997, devotees of home electronics eagerly awaited the DVD player, a new device that could play movies without videotape, and with greater clarity. It caught on even faste...
A.
die economic realities of its practicality
B.
robust economic growth
C.
economic problems of hi-tech companies
D.
ignorance of the technology
【单选题】单股人流为（）。建筑规范对楼梯梯段宽度的限定是住宅（），公共建筑（）。
A.
600mm～700mm；≥1200nun；≥1300mm
B.
550mm～700mm；≥1100msn；≥1200mm
C.
550mm～700mm；≥1200mm；≥1500mm
D.
500mm～600nun；≥ll00mm；≥1300mm