题干
Look! The panda is so ____. It's _____ than both of us.
A：heavier; fat
B：fat; heavy
C：fat; heavier
答案(点此获取答案解析）
C
Look! The panda is so ____. It's _____ than both of us.
A：heavier; fat
B：fat; heavy
C：fat; heavier
向量
，且满足
。若
，则 （ ）