阅读短文，根据短文内容判断句子的正误。正确的写T，错误的写F。
   Whales are the biggest animals in the world.They are quiet and gentle（温和的）.They live happily in the sea.But did you know？Some countries have a cruel（残忍的） tradition-whaling（捕鲸）.Japan is an island（岛屿） country.Fishing is a big part of its culture.In ancient（古代） Japan，people hunted（捕猎）whales for many uses：They used whale oil（油） for lamps and soap（肥皂） .They used whale bones to make things like umbrellas.They ate whale meat，especially on hard days.One whale can feed many people.Whales are important to the sea.They are part of the ecological system（生态系统）.To protect whales，many countries signed an agreement（签订协议） to stop commercial whaling（商业捕鲸） in 1986.Japan was one of them.But this July，Japan restarted（重新开始） whaling.Some schools even cook whale meat for students.Now the number of whales is going down.Many people have hunted whales secretly（秘密的） .Fishermen from Japan，Norway（挪威） and other countries hunt whales.Blue whales nearly（几乎） die out（灭绝） because of hunting.They are facing a serious problem.How can we help them？Do you have any ideas？
（1）Whales are the biggest animals in the world.They are cruel and dangerous．

F

F

（2）Mary countries signed an agreement to stop commercial whaling in 1986．

T

T

（3）The underlined（下划线的） phrase "going down" means（意思是）"下降"．

T

T

（4）Japan is an island county.Fishermen from Japan hunt whales．

T

T

（5）Blue whales die out because of hunting．

F

F