A.To promote sportsmanship among business owners.B.To encourage people to suppor
A. To promote sportsmanship among business owners.
B. To encourage people to support local sports groups.
C. To raise money for a forthcoming local sports event.
D. To show his familys contribution to the community.
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现代生物技术主要包括( )、( )、( )和( )等。
A.The local government.B.The federal government.C.The Congress.
A. The local government.
B. The federal government.
C. The Congress.
D. The Food and Drug Administration.
简介DNA聚合酶Ⅰ和Klenow大片段的结构与功能。
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