皮皮学，免费搜题
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【单选题】
下述哪项改变不属于化生A.
柱状上皮变为鳞状上皮
B.
纤维组织变为骨组织
C.
胃粘膜中出现肠型上皮
D.
肉芽组织变为瘢痕组织
E.
瘢痕组织中出现骨组织
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举一反三
【多选题】() are Marshall’s contribution to IO .
A.
Introduce organization as a fourth factor of production
B.
Touched on the issue of Economies of Scale
C.
Made research for product heterogeneity
D.
Put forward the concept of Workable competition
【简答题】读课文，判断下列句子对(√)错(×)。 ( ) 1. Amy's Mum bought a new TV for the children. ( ) 2. The computer is very nice. ( ) 3. Amy wants to buy a book about computers. ( ) 4. The books about computer...
【简答题】根据课文，按顺序排列句子。 ( ) Then we put Christmas things on the tree. ( ) Now let's put our gifts under the tree. ( ) Let's invite Danny to help us put up the tree. ( ) First, we put on the ligh...
【单选题】The center of the Marshall's economic system is ( ).
A.
production t heory and distribution theory
B.
d istribution theory and consumption theory
C.
p rice theory and distribution theory
D.
p roduction theory and price theory
【简答题】伯格曼规律
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