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【多选题】
关于牙本质的叙述哪项正确A.
牙本质贯穿本质全层
B.
牙本质向周围发出许多侧枝
C.
本质矿化程度高
D.
本质矿化程度低
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【简答题】The 20th century has witnessed an enormous worldwide political，economic and cultural ______. A) tradition B) transportation C) transmission D) transformation
【单选题】The remarkable progress of science and technology in the 20th century has brought enormous benefits to humankind. Long and healthy lives, economic prosperity and a pleasant and convenient living envir...
A.
may cause the lack of scientists throughout the world in the century to come
B.
is mainly due to the explosion of scientific information
C.
may increase the communications gap between young people and scientists
D.
may hinder the development of human society
【简答题】阅读理解。 Most of the 20th century has been a development on the Industrial Revolution taken to an extreme: people now own more products than ever before; there are enough nuclear weapons to destroy the e...
【简答题】全社会资产投资是衡量投资规模的主要变量。 （ ）
【单选题】In the late 20th century, information has acquired two major utilitarian connotations. On the one hand, it is considered an economic resource, somewhat on par with other resources such as labour, mate...
A.
the remarkable rise in information-processing activities
B.
a sharp increase in information-intensive activities
C.
information as an economic resource
D.
the birth of information society
【简答题】Most of the 20th century has been a development on the Industrial Revolution taken to an extreme: people now own more products than ever before; there are enough unclear weapons to destroy the earth s...
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