The decline in marriage has been offset by a rise in cohabitation.结婚人数的减少由于同居人数的增加而得以弥补。Unit 13 Cohabitation: Trial Marriage or Lack of Commitment?同居: 试婚还是缺乏责任?The fastest growth in cohabitation is among the over - 50 se...
Viruses tend to be good at surviving when a computer system crashes.计算机病毒在系统崩溃后往往依然存在。This is a new kind of viruses in the computer.这是一种新的电脑病毒.All bacteria are larger than viruses.所有细菌都比病毒大....