若A,B,C是直线存在实数x使得x2OA→+xOB→+BC→=0→,实数x为( )
"What happened?" he asked me in .
选出不同类的单词
____A.frog B .jelly C.ice cream
____A.bee B. sweet C. biscuit
____A.cat B. dog C. jelly
____A.colour B. biscuit C.ice cream