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【单选题】
初夏,南方某绵羊群发病,以 1 岁左右多发。病羊精神沉郁,体温 41°C左右,流涎,口腔黏膜充血、发绀,呈青紫色,重症病例口腔、唇、齿龈和舌黏膜糜烂。部分病羊发生蹄。该病最易感的动物种类是 (2019真题161)A.
山羊
B.
绵羊
C.
奶牛
D.
黄牛
E.
水牛
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【单选题】It is not who rules us ______ is important, but how he rules us.
A.
what
B.
that
C.
/
D.
which
【简答题】Who will do more harm to the environment, the developing countries or the developed countries?
【单选题】听力原文：The new rules call for blood centres to develop more ways to make sure the country's blood supply. According to the speaker,
A.
there are more ways to ensure blood supply.
B.
more ways should be developed.
C.
new rules should be developed.
D.
more blood supply should be called for.
【单选题】From 1949 to 1972, the number of scientists who moved into the USA from various countries in the world reached ()
A.
200 000
B.
300 000
C.
400 000
D.
500 000
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