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【单选题】
超低出生体重儿是指出生体重小于A.
1500g
B.
2000g
C.
1000g
D.
500g
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【简答题】阅读理解 In our city there is a big zoo. There are a lot of different animals in it. There are some scary tigers and lions. They like eating meat and they eat much meat every day. There are also two big e...
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A.
产蛋下降综合征病毒
B.
禽正呼肠孤病毒
C.
传染性法氏囊病病毒
D.
禽流感病毒
E.
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A.
产蛋下降综合征病毒
B.
禽正呼肠孤病毒
C.
传染性法氏囊病病毒
D.
禽流感病毒
E.
传染性支气管炎病毒
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