题目内容
病毒的基因组只能是DNA或RNA之一。
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病毒在细胞内才有生命力，才能进行繁殖。
Establishopenlinesofcommunicationwithyourroommate.Ifsomethingisbuggingyou,____tolethimorherknow.Beupfrontandassertive,but____.Andkeepinmindthatit’salways easier todealwithproblems____.
Be____ofyourroommate’spropertyandspace.Askpermissionbeforeyouborrowthingsthat____.Don’tforgetthatonlyhalftheroom____you.Andalways____,evenifyou’llbebackinaminute.
Aboveallelse,treatyourroommatehowyouwouldlike____.That’sthegoldenrule.
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