Relations between the United States and Colombia suffered for many years because of an incident involving the Republic of Panama. By the end of the Spanish-American War in 1898, many Americans felt that an easier and faster way was needed to get ships from the Atlantic Ocean to the Pacific Ocean. Some people in the United States first believed that a canal across Nicaragua was the answer. However, President Theodore Roosevelt decided that a canal through Panama would be a better choice.
In order to build the canal, the united States had to negotiate a treaty with Colombia, which at that time controlled Panama. Roosevelt offered Colombia $10 million plus＄ 250 000 a year for 99 years for a six-mile-wide strip of land across panama. Colombia rejected the United States’ offer. This angered President Roosevelt, and negotiations with Colombia ended.
1903, a revolution broke out in Panama. United States ships were sent by President Roosevelt to protect Pana
A. wanted to build a canal because it was considering starting a war
B. felt that building a canal through Panama was worth the risk
C. believed that a canal through Nicaragua would be profitable
D. had lost the Spanish-American War
Each day every person in the United States throws away more than five pounds of garbage(垃圾). There is more garbage now than ever before and most of it is made up of the packages and cans in which we put our food. The traditional way of getting rid of solid wastes is quickly becoming inadequate. Many cities are experimenting with newer ways of handling their growing piles of garbage.
One of these new ways is "recycling"(回收使用). Through recycling usable materials are taken out of garbage and made into something else. These usable parts of garbage are put through the cycle of going from a raw material to a finished product again.
In some cities a machine called Hydrapulper is being used to help recycle garbage. A Hydrapulper is like a huge mixing machine. The garbage is dropped onto a conveyor belt (传送带) that feeds the machine. At the same time, water is pumped into the Hydrapulper. With a mixing action, the Hydrapulper throws out the heavy metal objects tha
A. It is thrown away.
B. It is burnt.
C. It turns into some solid objects.
D. It is stored undergroun
Text 2
The domestic economy in the United States expanded in a remarkably vigorous and steady fashion. The revival in consumer confidence was reflected in the higher proportion of incomes spent for goods and services and the marked increase in consumer willingness to take on installment debt. A parallel strengthening in business psychology was manifested in a stepped-up rate of plant and equipment spending and a gradual pickup in expenses for inventory. Confidence in the economy was also reflected in the strength of the stock market and in the stability of the bond market. For the year as a whole, consumer and business sentiment benefited from the ease in East-West tensions.
The bases of the business expansion were to be found mainly in the stimulative monetary and fiscal policies that had been pursued. Moreover, the restoration of sounder liquidity positions and tighter management control of production efficiency had also helped lay the groundwork for a st
A. reduced government spending.
B. devaluation of the dollar.
C. productivity measures.
D. wage and price controls.
Barbed wire, first patented in the United States in 1867, played an important part in the development of American farming, as it enabled the settlers to make effective fencing to enclose their land and keep cattle away from their crops. This had a considerable effect on the cattle ranching, since the herds no longer had unrestricted use of the plains for grazing, and the fencing led to conflict between the farmers and the cattle ranchers.
Before barbed wire came into general use, fencing was often made from serrated(边沿呈锯齿型的) wire, which was unsatisfactory because it broke easily when under strain, and could snap in cold weather due to contraction. The first practical machine for producing barbed wire was invented in 1874 by an Illinois farmer, and between then and the end of the century about 400 types of barbed wire were devised, of which only about a dozen were ever put to practical use.
Modern barbed wire is made from the mild steel, high-tensile steel, or alum
A. prevent the reel from advancing to rapidly
B. twist the wire
C. separate doublestranded wire
D. cut the wire that becomes barbs
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