![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
现代工业(modern industry)的特点是()
A.采用的原料种类越来越少
B.对劳动力数量、体力的投入越来越多
C.单位产值能源消耗越来越多
D.对劳动力知识、技术的投入逐渐增加
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
D、对劳动力知识、技术的投入逐渐增加
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.采用的原料种类越来越少
B.对劳动力数量、体力的投入越来越多
C.单位产值能源消耗越来越多
D.对劳动力知识、技术的投入逐渐增加
D、对劳动力知识、技术的投入逐渐增加
Modern industry must have developed ______.
A.before the Middle Ages
B.around the 19th century
C.in Greece or Rome
D.machines to take tests
Milk was one of the main foods for people long before history was written. Maybe【21】will remain an important food as long as there are【22】that give milk. The old word "milk"【23】Sanskrit(梵文), one of the oldest【24】known to man. A very old picture of milking,【25】was drawn five thousand years ago, has been found.
In the years long ago, people got their milk【26】their own animals. But【27】modern times new inventions made the milk industry(产业) a big business.【28】1851 Gall Borden found a way to【29】some of the water out from milk. This made milk keep longer. Four years later, Louis Pasteur【30】 a way to kill the bacteria(细菌) in milk. Then a special milk bottle was made. This was followed【31】 the invention of machines that could fill bottles with milk. The discoveries had a great effect(影响) on the milk industry. They meant that milk could be kept longer.
Some people believe that milk drinking will become less popular【32】 it has been. But remember how long milk has been an important food【33】 think of the many ways【34】 it is useful. It seems【35】 to say that the milk industry will always be important.
(36)
A.it
B.they
C.he
D.she
The oldest kind of computer is the abacus, used in China since the sixth century. In the seventeenth century an adding machine was invented, but the first large, modern computer was built in 1973. A few years later a computer could do 5,000 additions per second. Now the computations are so fast that they are measured in nanoseconds.
Today most computers are stored-program computers, that is, they have a memory. They are getting smaller and smaller, and computing faster and faster. Even in a large computer, the part that does the actual computing is about the size of the end of a finger.
Computers can do all kinds of work. When someone buys something in a department store, in formation about the sale goes into a computer. A scientist can talk to the computer about the rocks, and the computer answers the questions. A doctor can talk to the computer and explains what is wrong with a patient. If the doctor asks why, the computer goes through its stored information and ex plains exactly why.
When early humans began fanning, it was a revolutionary change in human life. It was hundreds of thousands of years later that people developed a writing system. In less than fifty years people have developed computers that can do most of the things humans can do. This could be a frightening development.
The oldest kind of computer, the abacus, has been used since ______.
A.600
B.700
C.800
D.500