The two fish species(物种)are some of the oldest living animals in the Yangtze River.And Chinese sturgeons are even "aquatic(水中的)panda".They have lived for about 140 million years. Since 1983,people have set free about 7 million Chinese sturgeons in the Yangtze River.(1)Where did the ...
根据第四段The two fish species(物种)are some of the oldest living animals in the Yangtze River.这两个鱼种是长江的一些最古老的生物,据此判断它被称为水中熊猫是因为数量非常少,因此猜测划线部分含义为数量非常少。故选A。(4)细节理解题。根据第三段As for the ...
C. Most fish species are not filter-feeders. D. Few fish species are successful in the near-surface layers Paragraph 2 is marked with an arrow 正确答案:C 显示答案 进入答题 问题反馈收藏题目 译文 Feeding Strategies in the Ocean [#paragraph1]In the open sea, animals can often find food re...
925.Some students act this way merely because they are afraid of being called on by the teacher. 有些学生这副模样,只是因为他们害怕老师提问。 926.However, if a student does not bother to brush her hair and her eye...
63K Understand bony fish through examples of their types and species. Learn about the characteristics and anatomy of bony fish like clownfish, koi, trout, and lungfish. Related to this QuestionWhat are some examples of jawless fish? What is an example of a cartilaginous fish? What type of ...
These structures can be raised upward, allowing the fish to see overhead as well as to the side and to the front. A few kinds of fishes are born blind. They include certain species of catfish that live in total darkness in the waters of caves. Some of these fishes have eyes but no...
(B)Se a urchins(海胆) are small creatures, but what's really remarkable about them is that they eat anything that happens to float by. They have really sharp teeth they use to rid rocks of algae(海藻),which makes them pretty valuable especially in places like Hawaii where algae are threa...
What is the difference between non-native and invasive species? What are some endangered species in North Carolina? How many invasive species are there in Canada? Where do most invasive species come from? What is the difference between exotic species and invasive species?
There are thousands of different species of fish, and they're all classified into just three main groups, or classes. This lesson will describe these three groups and teach you the characteristics of each one. Related to this QuestionWhat...
What are sharks? Sharks are a group of cartilaginous fishes known for their predatory nature and distinctive skeletal structure. 12 Can fish live in both saltwater and freshwater? Some fish species can live in both saltwater and freshwater, but most are adapted to one specific environment. 8 Do...