A linguist，an expert on languages，is always listening，never off-duty．I invited a group of friends round to my house，telling them that I was going to record their speech．I said I was interested in their regional accents（地方口音），and that it would take only a few minutes．Thus，one evening，three people came to my house and were shown into my fr

The Bell family was originally from Scotland where Alexander was born in 1847．Both his grandfather and father trained Alex in public speaking and teaching the deaf to speak．His mother was deaf so he had a deep desire to help those who couldn't hear．He studied anatomy（解剖）and physiology（生理学）which gave him a background of understanding as t

How to Interview People
Interviewing is one of those skills that you can only get better at．You will never again feel so ill at ease as when you try it for the first time，you'll probably never feel entirely comfortable trying to get from another person answers that h

I saw my first tiger in a national park in India．It was a young male and he was drinking at a waterhole．He raised his head slowly and stared at us for a full minute．Then he turned his back on us and disappeared quickly into the jungle．
    Twenty years ago，the tiger was in trouble．In India its numbers were around 1，800

It is said that standardized testing harms children．The tests upset pupils and make them afraid．If a pupil gets a low score he will be seriously damaged．Standardized testing is not helpful to the normal educational aims designed to help the child．
    There is，no doubt，anecdotal（奇闻轶事的）evidence to support some of

Recycling  Resources
Increased population increases the need for natural resources and also increases waste products．Making a new useful product out of a waste product decreases（减少）our need for natural resources．Recycling means using something over again after i

Culture Shock
Specialists say that it is not easy to get used to life in a new culture．“Culture shock”is the term these specialists use when talking about the feelings that people have in a new environment．There are three stages of culture sho

A
A newspaper in Helsinki, Finland, recently published a cartoon of a

B
If you dream of going someplace warm to escape the cold winter weather, a trip to a recently discovered planet would certainly warm you right up. The planet, named OGLE-TR-56b, has temperatures of more than 3,000°F. “Thi

Orangutans are most at home in forests. These large and interesting apes move through the trees by swinging among branches. They sleep in trees too, in nests they make from branches and leaves. They eat the fruit, leaves, and bark of the trees.

Moslems are people who believe in the teachings of a man called Mohammed. Mohammed lived in the 600s. One of the things he said was that no one should make copies of living things.
In the 600

Recently, a professor of Philophy in the United States has written a book called Money and the Meaning of Life. He has discovered that how we deal with money in our day-to-day life has more meaning than we usually think. One of the exercises he asked hi

Singapore—Young people in Singapore are in no hurry to get married, and most graduate women would prefer to remain single if they cannot find a suitable life partner, a survey(调查) has found.
For graduate aged 21 to 30, marriage

C
Elephants don't forget—at least, female（雌性的）elephants don't. Elephant families are matr

D
If there is no difference in general intelligence（智力）between boys and girls, what can explain girls' poor performance in science and mathematics?
It seems to be that