問題詳情

   Animals, like people, need certain things to live. They need plenty of food and water. Manybirds migrate south every year when the winters become cold. This is because there is less foodduring the winter in northern areas. Also, these birds fly south in order to find a warmer place tolive.    Some animals migrate in order to reproduce. The huge humpback whales swim a great distanceto have their children. Humpback whales live in very cold ocean waters. So the humpback whalesswim far away to warmer waters to reproduce. When the baby whales grow to be big enough, thewhale family will return to the colder waters.      One type of animal, called plankton, migrates every day! These tiny sea creatures spend theirdays several hundred feet under water. At night, however, the plankton swims up to the surface ofthe ocean.
46. The word plankton in this passage means “_____.”
(A) a type of bird
(B) a type of whale
(C) a very small sea anima
(D) a piece of board or wood

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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