What is the author's attitude toward changes brought on by technological innovation
A. He is excited about them.
B. He is disturbed by them.
C. He questions their usefulness.
D. He accepts them as natural.
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The flat offered in ad D ______.
A. is expensively furnished
B. is on the first floor
C. can only accommodate four people
D. is only available for a short period
下列激素中，哪一个不是腺垂体合成和分泌的
A. 生长素
B. 催乳素
C. 催产素
D. 黄体生成素
In the second paragraph, the author suggests that "economists" would ______.
A. consult the national commission on the economy
B. plan the economy through yearly forecasts
C. consider the influence of technological innovation important
D. value the economic contribution of farm animals
具有很强的再生能力的间叶组织是
A. 纤维母细胞
B. 软骨细胞
C. 骨骼肌细胞
D. 平滑肌细胞
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