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【单选题】
机体抗肿瘤的免疫学机制中体液免疫应答机制以哪项为主A.
体液免疫应答
B.
细胞免疫应答
C.
细胞因子作用
D.
过继免疫
E.
ADCC
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【单选题】The explorers ______ into the unknown regions of the Amazon River.
A.
penetrated
B.
injected
C.
reached
D.
stretched
【单选题】—Is the Changjiang River ______ in the world? —No, the Amazon is . [ ]
A.
very long
B.
longer
C.
the longest
D.
longest
【单选题】C Along the river banks of the Amazon and the Orinoco there lives a bird that swims before it can fly, flies like a fat chicken, eats green leaves, has the stomach of a cow and has claws (爪) on its wi...
A.
Hoatzins in dry and rainy seasons.
B.
The relatives and enemies of hoatzins.
C.
Primitive birds and hoatzins of the Amazon.
D.
The appearance and living habits of hoatzins.
【简答题】12月11日起,世贸组织上诉机构--全球贸易“最高法院”在运行25年后因____国阻挠陷入瘫痪。____冲击了全球贸易和产业链,拖累世界经济。
【单选题】Across the continent of South America ________ the Amazon River.
A.
lie
B.
lies
C.
is lying
D.
lying
【单选题】Find out the topic sentence in each of the following paragraphs , mark A, B, C, or D. A. The Amazon River is the widest river in the world, with one-fifth of all the fresh water on earth moving throug...
A.
The Amazon River is the widest river in the world, with one-fifth of all the fresh water on earth moving through its mouth .
B.
In length it is second only to the Nile, and if stretched across the United States, it would reach from New York to Los Angeles .
C.
In addition, the Amazon covers the largest area of any river .
D.
Therefore, it can be argued that the Amazon is the mightiest river on earth.
【单选题】______ is recognized as the longest river in Great Britain.
A.
The Thames River
B.
The Amazon River
C.
The Severn River
D.
The Rhine River
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