根据第三段提到blue whales were found widely throughout the North Pacific and California waters. But from the 1920s to the 1960s, whaling severely reduced the whale populations. Blue whales never recovered in the Northern Pacific, making sightings in this area rare.蓝鲸在北太平洋和加利福尼亚到处...
29.C细节理解题.根据第三段blue whales were found widely throughout the North Pacific and California waters.But from the 1920s to the 1960s,whaling severely reduced the whale populations.Blue whales never recovered in the Northern Pacific,making sightings in this area rare可知蓝鲸在北太平洋和加利福...
rarely found in the South Pacific Ocean29. What does the underlined word "cetaceans" in Paragraph 5probably mean? BA. Land creatures.B. Whale species.C. Ocean conditions.D. Migration patterns.30. What might make blue whales migrate according to theresearchers?DA. Commercial whaling.B. Climate...
These amazing creatures are not only the largest whale species but also the largest mammal (哺乳动物) species to have ever existed on Earth.The average length of a blue whale is23-27 meters and its weight is from 100 to150 tons. In spite of their large size, blue whales can swim at ...
To indulge freely in a luxury or luxuries:For a few years, the nation lived large on its new-found oil wealth. [Middle English, from Old French, from Latinlargus,generous.] large′nessn. Synonyms:large,big,great These adjectives mean being notably above the average in size or magnitude:a...
The blue whale is the largest animal to ever live on our planet. They are larger than even the biggest dinosaurs. They can grow to 33meters long and weigh about 181 metric tons.The animal can grow to about the size of a Boeing 737 airplane. You might wonder how much such a large ani...
a GPS locator device and an instrument that follows movement.They used drones (无人机) to estimate the size of a whale's mouth area and how much food it could eat at one time.And they used instruments that recorded sound waves to estimate the amount of food in the waters near the ...
One of the blue whales,the largest animal alive today,has been caught making an appropriately big journey through the South Pacific.The whale was first recorded near the Galapa gos Island,west of Costa Rica.Years later,that same whale was photographed off the coast of Chile in South America,...
根据最后一段的“Whale hunting during the 20th century caused sharp drops in whale populations. Pyenson added that supporting whale recovery may help repair “ecosystem functions lost in the past hundred years.”(20世纪捕鲸导致鲸鱼数量急剧下降。Pyenson补充说,支持鲸鱼恢复可能有助于修复‘过去一百年中...
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