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【单选题】
机体发现和清除体内出现的“非己”成分,如衰老、死亡细胞等的功能称为A.
免疫自稳
B.
免疫耐受
C.
免疫监视
D.
免疫识别
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【简答题】This library is the (modern) ______ building I have ever visited in this city.
【单选题】It is reported that the worst pedestrian jam in this city occurs around this crossroads.
A.
confession
B.
congestion
C.
digestion
D.
exhaustion
【单选题】We lived in this city. We had many joys. A. We lived in this city, having many joys. B. We lived in this city, and have many joys. 哪一个句子是正确的?A or B
A.
A
B.
B
【简答题】四种引起细菌基因重组的方式是______、______、______和______。
【单选题】Never before in greater need of modern public transport than it is today.has this city been (正确）this city has beenwas this citythis city was
A.
has this city been
B.
this city has been
C.
was this city
D.
this city was
【单选题】It is reported that the worst pedestrian jam in this city occurs around this crossroads.
A.
confession
B.
congestion
C.
digesfon
D.
exhaustion
【单选题】You will see this product____wherever you go in this city.
A.
advertise
B.
to be advertised
C.
advertised
D.
advertising
【简答题】Are there any places ofinterest in this city?
【简答题】By this time next year the Smiths______(live)in this city for ten years．
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