問題詳情

BHumpback whalesHumpback whales are sometimes called performers of the ocean. This is because they can make impressive movements when they dive. The name “humpback”, which is the common name for this whale, refers to the typical curve shape the whale’s back forms as it dives.[来Sometimes the humpback will dive with a fantastic movement, known as a breach. Dring breaching the whale uses its powerful tail flukes to lift nearly two-thirds of its body out of the water in a giant leap. A breach might also include a sideways twist with fins stretched out like wings, as the whale reaches the height of the breach.A humpback whale breathes air at the surface of the water through two blowholes which are located near the top of the head. It blows a double stream of water that can rise up to 4 meters above the water.The humpback has a small dorsal fin located towards the tail flukes about two-thirds of the way down its back. Other distinguishing features include large pectoral fins, which may be up to a third of the body length, and unique black and white spots on the underside of the tail flukes. These markings are like fingerprints: no two are the same.Humpback whales live in large groups. They communicate with each other through complex “songs”.Quick Facts[Size:14m~18m in length30~50 tons in weightLiving Open ocean and shallow coastline watersEnvironment:From warm tropical (热带的) waters, where they breed, to cold polar waters, where they eat.Det:Shellfish, plants and fish of small sizeHunting:Sometimes in groups, in which several whales form a circle under the water, blowing bubbles that form a “net” around a school of fish. The fish are then forced up to the surface in a concentrated mass.Current state:endangered; it is estimated that there are about 5000~7000 humpback whales worldwide.
69.According to Quick Facts, a humpback whale ______.
(A)cannot survive in waters near the shore
(B)doesn’t live in the same waters all the time
(C)lives mainly on underwater plants
(D) prefers to work alone when hunting food

參考答案

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0) #
個人：尚未作答書單：文法

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