I think your sister is old enough to know ______ to spend all he

I think your sister is old enough to know ______ to spend all her money on fancy goods.
A、better than
B、than
C、other than　
D、rather than
【正确答案】：A
【题目解析】：句意：我认为你姐姐年纪够大了，不至于把所有的钱都花在华而不实的东西上。better than意为“多于，好于，超过”；than意为“比”；other than意为“除了，不同于”；rather than意为“而不是”。