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There'snosuchthingaslivingalone.Nevermindifyou're(61)onlypersoninyourhouseandhavenodog,nocat,notevenfish.Youstillhavegotseveralbillion(62)(roommate)-andsodoweall.Someofthemareharmless,
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There's no such thing as living alone.Never mind if you're (61)___ only person in your house and have no dog,no cat,not even fish.You still have got several billion (62)___(roommate)-and so do we all.Some of them are harmless,some are (63)___(actual) helpful and some could even kill you.They are,of course,bacteria,fungi(菌类) and viruses,and like it or not,they're on you,around you,and deeply inside you.The fact that bacteria life is everywhere is not (64)___(surprise).It's something you (65)___(learn) from your childhood when your mother told you not to drink water from someone else's glass.There are lots of bacteria (66)___ are living in your tea kettle.There are bacteria (67)___ (sleep) with you on your bed.Scientists are beginning (68)___ realize) the richness of the microbiome(微生物群系)-which is as complex as the ones(69)___ (find) in oceans,rainforests,deserts and woodlands.Your house has a microbiome and (70)___ do you.
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61. the 考查冠词. 根据句意你是唯一的一个人,这里是特指.所以用定冠词the.
62.roommates 考查名词. roommate是可数名词,被several billion修饰,所以用复数形式.
63.actually 考查副词.此处用副词修饰形容词helpful"一些实际上是有益的".
64.surprising 考查形容词.细菌生活无处不在的事实并不令人意外.surprising是形容词"令人意外的".
65.learned/learnt 考查时态. 与下文过去时同时发生,应用过去时态.
66.which/that 考查定语从句.先行词是bacteria,___are living in your tea kettle.是定语从句,指物,作主语,所以用关系代词which或者that.
67.sleeping 考查非谓语.bacteria与sleep之间是 主动形式,作后置定语,相当于定语从句which/that are sleeping.
68.to realize 考查固定结构. start 和begin 在进行时态后,后跟心理活动的动词,常用不定式表示.
69.found 考查非谓语. ones与find之间是被动关系,所以用过去分词做定语,相当于定语从句which/that are found.
70.so 考查倒装.so加倒装结构,表示"…也如此".
62.roommates 考查名词. roommate是可数名词,被several billion修饰,所以用复数形式.
63.actually 考查副词.此处用副词修饰形容词helpful"一些实际上是有益的".
64.surprising 考查形容词.细菌生活无处不在的事实并不令人意外.surprising是形容词"令人意外的".
65.learned/learnt 考查时态. 与下文过去时同时发生,应用过去时态.
66.which/that 考查定语从句.先行词是bacteria,___are living in your tea kettle.是定语从句,指物,作主语,所以用关系代词which或者that.
67.sleeping 考查非谓语.bacteria与sleep之间是 主动形式,作后置定语,相当于定语从句which/that are sleeping.
68.to realize 考查固定结构. start 和begin 在进行时态后,后跟心理活动的动词,常用不定式表示.
69.found 考查非谓语. ones与find之间是被动关系,所以用过去分词做定语,相当于定语从句which/that are found.
70.so 考查倒装.so加倒装结构,表示"…也如此".
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