Men sometimes say, "We are better and cleverer than women. Women never invented things. We do." It is true that men have invented a lot of useful things: Machines, rockets, and guns, too. But scientists now agree that women invented one very important thing. It has changed history. They invented agriculture.
Before the invention of agriculture men were hunters. They went out every day. Sometimes they killed animals, and sometimes animals killed them. Life was difficult and dangerous. Women had to go out everyday, too. They collected roots, fruits and grass. Then, one day, more than 10,000 years ago, a woman dropped some grass seeds. She dropped them near her home in the Middle East. They grew, and the first wheat was born. The idea grew, too. Women planted roots and fruit trees. Then they could stay at home and look after the .children and the animals. Women like baby animals. Scientists think that women kept the first domestic animals: Dogs, cows, sheep and goa
A. found wheat
B. planted fruit trees
C. let fall some grass seeds
D. grow vegetables
Experts say children can begin learning a second language in preschool, and should begin before the age of ten to take advantage of young children’s natural ability to acquire language. This advantage is lost by the time most children encounter (遇到) a foreign language in the classroom, in middle school or high school.
Dr. Noble Goss, an assistant professor of Spanish and German at Harding University in Arkansas, says, "As a father of bilingual (双语的) children (My wife is Mexican), I know that not only it is easy for children to learn one or more languages, but they have an amazing way of separating them out more successfully than you would think. "
If a child hears two languages early, he accepts both equally. But if given a chance to speak both, can they be fluent in both
Not everyone agrees that early childhood is the only time to start a language, however. Reeves, the chairman and founder of the Center for Performance Assessment i
A. The Earlier, the Better
B. Early Bird Can Get the Worm
C. Starting a Second Language Learning Early
D. Children Has a Natural Bilingual Ability
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术后对伤口的处理应（）
The home computers industry has been growing (21) in the world for the last twenty years. Computers used to be large, expensive machines that (22) very difficult to use. But scientists and technicians have been making smaller and cheaper while at the same time they have been made easier to use. As (23) , their popularity has been increasing as more people have been buying computers for their homes and businesses.
Computers have been designed to store (24) and compute complex problems. Computers are used in (25) traffic in some cities. Stores use computers to keep records of their goods and to send (26) to their customers. Offices use computers to type letters, record business and communicate (27) other offices. People have been using computers in their homes to keep track of expenses and (28) their household appliances on and off.
One important new (29) for computers is for entertainment. Many new game
A. are
B. were
C. is
D. was
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