I'm Amy Black．I have never seen sharks in the____．But as a(n)____，I have seen sharks in an aquarium(水族馆)．

    ____，there are between 200and 250 kinds of sharks of different sizes．Sharks are much____than other fishes．The largest carl be as long as 15____ largest shark____about 3，200 kilos．Usually sharks don't attack(攻击)people．Sometimes they attack people____themselves．One of____sharks is the Great White Shark．They attacked a lot of people on the beaches of America．

1的相反数是（   ）

阅读下面这首古诗，然后回答问题。

和李上舍冬日书事①

【宋】韩驹

北风吹日昼多阴，日暮拥阶黄叶深。

倦鹊绕枝翻冻影，飞鸿摩月堕孤音。

推愁不去如相觅，与老无期稍见侵。

顾藉②微官少年事，病来那复一分心。

【注】①这首诗是诗人因获罪被贬分宁县令时所作。②顾藉：顾念。