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（）是病原物在寄主体内吸收营养和不断扩展蔓延的时期，也是寄主与病原物相互斗争的时期。影响潜育期长短的主要因素是（）。
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举一反三
【单选题】—William, what kind of music do you like, rap or jazz? — _______. I prefer country music.A．Eithe
A.
40. —William, what kind of music do you like, rap or jazz? — _______. I prefer country music. A．Either will be OK
B.
Both will be OK
C.
To be honest, neither
D.
Generally, I’m not sure
【简答题】人犯大脖子病主要因为缺什么元素?
【单选题】――I'm looking for a shirt for my father．――＿＿＿＿Size 40．
A.
What size do you wear?
B.
What can I do for you?
C.
How about this one?
D.
What size does your father wear?
【单选题】After Mr. Robinson returned from India, he.
A.
(A) charged jobs several times.
B.
(B) went to live in Manchester.
C.
(C) did similar work as in India.
D.
(D) became head of a research team.
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