62.The difference between humans and animals is (be) that the former can think while latter cannot, but not only humans but also every species of animals have人类与动物的区别就在于前者会思考而后者不会,然而无论是人类还是任何动物的物(have) their origin in ocean.63. The reason why the Beatle...
Sex changes don’t have to be one-way. When two female gobi fish meet, one of them will often become male so that they can mate. Switching back is less common, perhaps because there are higher costs involved, butit does happen. Many animals have their cake and eat it by practising “...
An animal that feeds on another animal or hunts other animals for food is called a predator. An animal that is being eaten is called prey. A predator...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our e...
1 Recent research by environmental scientists, however, shows that in fact, humans are the most fearsome hunters who have the greatest impact on animal populations. Human activities have brought many animals close to extinction. In the last 500 years, over 300species of animals have gone extinct...
Scientists have discovered that geese flying in a V-shaped formation can help them to save energy. In this way, they can fly 70 percent farther without rest than birds flying alone.How does this apply to (适用于) humansWork together. Whether it is in our personal lives or our professional...
Warm-blooded BirdsBirds are animals that have feathers and that are born out of hard-shelled eggs.Some people think that what makes an animal a bird is its wings. Bats have wings. Flies have wings. Bats and flies are not birds. So what makes an animal a bird?The answer is feathers!
Humans kill large carnivores---a category of animals that includes wolves,bears,lions,tigers and pumas---at more than nine times their death rate in the wild.Although they may not be our prey (猎物) in the traditional sense,new research shows that some of the world's biggest carnivores ar...
Insects are not eaten because the general opinion is that these are dirty animals one doesn't want to digest. The food taboo of one's culture is learnt through childhood. The taboos based on religion are not easy to change. But new types of foods are introduced on the market. They are...
That's why they have been so useful to mankind and live in perfect harmony with us.”可知,这里是说动物 与人类关系友好,它们与人类永远不会敌对,与 aggressive“好斗的,挑衅的”词义相近。 3.C 解析 推理判断题。 根据第四段第一句 " Horses are domesticated, for they're well- known for their ...
There are about 300 types of beetles that are eaten by humans, usually in the larval stage. These insects evolved around 270 million years ago. Though bug is the generic name for all kinds of insects; beetles, and bugs are different. Beetles have hard forewings or elytra, and their mouthp...