下列选项中关于鲸的描述，错误的是（）。

A、鲸的种类很多，一般可将它们分为两类，即须鲸和齿鲸

B、抹香鲸是鲸中洄游距离最远的一种

C、蓝鲸是体形最大，但却以体形很小的南极磷虾和其他小型鱼虾为食

D、鲸的尾鳍是水平的

相关问题推荐

• 共用题干The Greatest Mystery of Whales
  The whale is a warm-blooded,air-breathing animal,giving birth to its young alive,sucking them-and, like all mammals,originated on land.There are many______(51)of this.Its front flippers（鳍状肢）, used for steering and stability,are traces of feet.
  Immense strength is______(52)into the great body of the big whales,and in fact most of a wha'e'sbo衡is one gigantic muscle.The blue whale's pulling strength has been estimated______(53) 400 horsepower.One specimen was reported to have towed（拖）a whaling vessel for seven hours at the______ (54)of eight knot（节）.
  An angry whale will______(55).A famous example of this was the fate of Whaler Essex,______(56)was sunk off the coast of South America early in the last century.More recently,steel ships
  have ___________( 57 ) their plates buckled（使弯曲）in the same way.Sperm whales（抹香鲸）were known to seize the old-time whaleboats in their jaws and crush them.
  The greatest______(58)of whales is their diving ability.The sperm whale dives to the bottom for his ______(59)food,the octopus（章鱼）.In that search he is known to go as far down as 3,200 feet,where the ______(60)is 1 ,400 pounds to a square inch.Doing so he will______(61)underwater as long as one hour.Two special1 skills are involved in this storing up enough______(62)(all whales are air-breathed ) and tolerating the great change in pressure.Just how he does it scientists have not______(63).It is believed that some of the oxygen is stored in a special______(64)of blood vessels,rather than just held in the lungs.And it is believed that a special kind of oil in his head is some sort of a compensating mechanism that ______(65)adjusts the internal pressure of his body.But since you can't bring a live whale into the laboratory for study,no one knows just how these things work. 65._________A:mentally B:artificially C:manually D:automatically

  查看答案

• 著名的龙涎香是抹香鲸（）里的异物，这是一种极好的保香剂，抹香鲸的名字也是由此而来的。

  A、脑

  B、皮肤

  C、肠道

  D、鳍

  查看答案

• 你知道它们的汉语意思吗？选择正确的译文。

  （  ) 1. A sperm whale can dive into the deep cold water. （  ) 2. How big is your fish？ （  ) 3. My fish is smaller than Sarah's. （  ) 4. A sperm whale has 50 teeth. （  ) 5. A killer whale is 8 meters.

  A. 我的鱼比萨拉的鱼小。 B. 抹香鲸有50颗牙。 C. 虎鲸8米长。 D. 抹香鲸能潜入到很深的冷水中。 E. 你的鱼多大？

  查看答案

• 海洋中有一种鲸体长可达30米，体重超过150吨，请问，它最可能是下列的哪种鲸？（）

  A、抹香鲸

  B、虎鲸

  C、蓝鲸

  D、灰鲸

  查看答案