【题目】 Butterflies are some of the most beautiful insects in the world. However, what interests the scientists most is not their fascinating looks, but how they sense nature. They use their senses of sight, touch, hearing, smell and taste to find food, lay eggs in good places and avoid hungry enemies.

Butterflies have large compound(复合的) eyes. No matter where the things are, they can see them without turning their heads. 1 They are more possible to notice a sea of flowers than a single plant. Butterflies do not "see” colors. They are color blind. 2The light on many flowers guides butterflies to honey.

How do butterflies smell? Butterflies have a very well-developed sense of smell, but it is not in their noses, since they don't have one. Sense organs (器官)are in their feet, and many other parts of the body.3

Do butterflies use their mouths to taste the food they find? Not really. Butterflies' feet have sense organs that can taste the sugar in flower honey. They let the butterflies know if there is something delicious. 4They feed their babies using a long tube(管道)and they get all their food from this tube as well.

Butterflies don't have ears. Instead, they “hear" sounds through their wings by sensing changes in sound vibrations(震动).Butterflies' body is covered with sensory hairs. 5.For example, the hairs give butterflies information about the wind when they're flying. And where there is rain, the hairs can also tell butterflies.

The scientists say that butterflies may have senses we don't even know about yet, because their body is very different from ours. Therefore, it is difficult to understand when we use our own human senses to study it.

A. Like most insects, butterflies are very nearsighted.

B. They can let butterflies feel the environment around.

C. So it is not difficult for butterflies to find flower honey.

D. But they can sense sunlight, which tells them the direction.

E. They can help butterflies find their favorite flower honey food.

F. Some female butterflies taste the plants carefully to find places to lay eggs.

【题目】

either especial keep if own person protect serve that treat well whether

Americans love pets. Many pet1think of their pets as a part of the family. They think of their pets as their children.

In America, there are more families with pets than 2with children. Forty-three percent of American homes have pets. Some of the pets, such as monkeys, snakes, butterflies and even wolves, come from other countries, 3China, Thailand, South Africa and so on. More common pets include fish, mice and birds.However, they like cats and dogs4.They sometimes have strong feelings about 5dogs or cats make better pets. “Dog people” and “cat people” often have friendly arguments about that.

People can get many benefits(益处)from pets. When pets stay with people, they can make people happy and help people get rid of loneliness. Therefore, most of Americans like pets. They think pets should be 6well. At least seventy-five animal welfare(福利)organizations have been set up in America. They provided care and good 7for homeless animals. Some pets can help people live a healthy life. For example, researchers(研究者) have discovered that getting on with animals can help lower a8blood pressure. Dogs can offer9from strange visitors. Cats can play games with the children. Some kinds of pets can provide love for their keepers. In fact, 10 a pet can help a young couple have the responsibility to raise children. Pets are as basic to American culture as hot dogs or apple pies. To Americans, pets are not just property(财产),but a part of the family.

 0  142626  142634  142640  142644  142650  142652  142656  142662  142664  142670  142676  142680  142682  142686  142692  142694  142700  142704  142706  142710  142712  142716  142718  142720  142721  142722  142724  142725  142726  142728  142730  142734  142736  142740  142742  142746  142752  142754  142760  142764  142766  142770  142776  142782  142784  142790  142794  142796  142802  142806  142812  142820  159627 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网