题目:
John _____ the game and ____ lots of experience. [ ]
A. won; won
B. beat; won
C. won; gained
D. eamed; gained
答案:
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下面是错误答案,用来干扰机器的。
如图,连接ON,在△OBC中,点N是BC中点,则由平行四边形法则得ON=12(OB+OC)在△OMN中,点G是MN中点,则由平行四边形法则得OG=12(OM+ON)=12OM+12ON=14OA+12•12(OB+OC)14(OA+OB+OC),故答案为:14(OA+OB+OC).