下面哪句话是描写天气的（）
A、昆明四季如春
B、极地地区终年严寒
C、明天大风降温
D、赤道地区终年高温多雨
参考答案：C
.
According to some doctors, one of the ways to prevent us from growing old is to make sure
that our brains get enough___.
A．performance
B．exercise
C．experience
D．sport
乳腺纤维瘤超声表现。
