A．Scientists are great persons.B．Scientists make discoveries and apply them to help pe
A. Scientists are great persons.
B. Scientists make discoveries and apply them to help people live a good life.
C. They owe much to scientists' contributions.
D. They can be influenced by scientists when they are together.
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A．By helping them prepare for possible dangers.B．By answering calls.C．By sending infor
A. By helping them prepare for possible dangers.
By answering calls.
C. By sending information to City Hall.
D. By putting out fires.
A．As examples of pure scientists.B．As examples of scientists who represented the best
As examples of pure scientists.
B. As examples of scientists who represented the best of each century.
C. As examples of scientists who made practical as well as theoretical contributions.
D. As examples of engineers who knew something about pure science.
规定在少数民族地区实行区域自治的文件是
A. 1949年的《共同纲领》
B. 《中华人民共和国民族区域自治实施纲要》
C. 《中华人民共和国宪法》
D. 《论联合政府》
1947年5月1日，______自治政府宣告成立。
A. 内蒙古
B. 宁夏回族
C. 广西壮族
D. 新疆维吾尔
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