下列有关密码子的叙述,正确的是( ) A.编码氨基酸的密码子位于DNA上B.密码子有64种,其中能够编码20种氨基酸的密码子为61种C.每个密码子都有与之对应的氨基酸D.密码子与相对应的氨基酸发生碱基配对 答案:B10、People ______ some kind of sports _________ to drink
more water.
A. play,
prefer B. playing, preferring
C. play, preferring D.
playing, prefer