Passage 8 How many different kinds of emotions do you feel You may be (1) to find that it is very hard to specify all of them. Not only (2) hard to describe in words, they are difficult to (3) . As a result, two people rarely (4) all of them. However,
Lizards that can outrun blazes. Birds that lay ash-colored eggs. Wildlife may have a limited ability to evolve in this fiery new era known as the Pyrocene.
In the past many studies placed too much emphasis on how animals are trained to learn. But recently more and more studies have focused on how animals equip themselves to learn. One study started with a school field trip to a pine forest where many pine cones were discovered, stripped (剥...
There are many reasons, including the destruction of natural habitats, the introduction of species and the destruction of human prey. Many species, such as elephants, rhinos, wild tigers, giant pandas, birds and other animals, will face the fate of dinosaurs if they do not take protective ...
Scientists have not discovered electromagnetic energy that behaves this way. Pet psychics also make several assumptions about animals' self-awareness and intelligence. We'll look at those in more detail next. Animal Emotions and Intelligence Many dogs appear to be happy while they are playing. ...
Finally, the parasite theory. Well, one thing that's typical of parasites is that their populations are not very large. Parasite populations have to stay within certain limits, because if there were too many parasites, they would kill off the host organisms they live on. But we're pretty ...
before biologists discovered the double helix structure of dna, alan turing, the mathematician who invented modern computing, proposed a bold theory of how animals got their patterns. turing hypothesized that as tissues develop, they pr...
However, no one has discovered any life in space yet. Why has no one from other planets sent us a message? Have they tried to send information to us? With so many stars in space, are we alone, or is there life on other planets in space?1. 请写出文中划线处“it”指代的内容。__...
Not only does this cat breed have the physical strength and speed to catch mice, but they’re highly intelligent animals. 10. Bengal Cat Image Credit: Seregraff, Shutterstock The Bengal cat is one of the most intelligent and active cat breeds you can own. They are skilled hunters who ...
bees are to the food we eat. When he was 11, his grandfather asked him to start a beehive to keep the___growing strong. “Forty-two years later, and I’m still___,”Quick said in a recent interview. Before his retirement, the master beekeeper taught entomology (the study of insects...