[简答题]Ngoni, an engineering graduate, has invented a highly secret and efficient process for borehole and water drilling. The device was superior but less expensive than similar devices on the market. He secured contracts with several large companies to market his device and went to great expense to retool his operations for production at the same time. Ngoni ordered from a manufacturer, Mhizha Enterprises, a consignment of plastic component parts which were needed in the manufacturing of said equipment for borehole and water drilling. Mhizha Enterprises received instructions to produce the parts by a specific date. The manufacturer failed to deliver the parts on time as he had discovered that he did not have the capacity to do so in the agreed time. Ngoni had no other alternative sources of supply and therefore lost several lucrative contracts he had arranged. The contracts are worth US$50,000. Required: In relation to the law of contract, advise whether Ngoni can sue Mhizha Enterprises

[简答题]Like bats, dolphins use echolocation—pulses of high-frequency sound—both to find prey and for explore their environments.

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Until men invented ways of staying underwater for more than a few minutes, the wonders of the world below the surface of the sea were almost unknown. The main problem, of course, lies in air. How could air be provided to swimmers below the surface’ of the sea Pictures made about 2,900 years ago in Asia show men swimming under the surface with air bags tied to their bodies. A pipe from the bag carried air into the swimmer’s mouth. But little progress was achieved in the invention of diving devices until about 1490, when the famous Italian painter, Leonardo da Vinci, designed a complete diving suit.
In 1680, an Italian professor invented a large air bag with a glass window to be worn over the diver’s head. To "clean" the air a breathing pipe went from. the air bag, through another bag to remove moisture, and then again to the large air bag. The plan did not work, but it gave later inventors the idea of moving air around in diving devices.

A. for nearly a hundred years
B. for almost a thousand years
C. for over a century
D. for a century

[单项选择]Believe it or not, optical illusion(错觉)can cut highway crashes.
(78) Japan is a case in point. (79) It has reduced automobile crashes on some roads by nearly 75 percent using a simple optical illusion. Bent stripes, called chevrons(人字形), painted on the roads make drivers think that they are driving faster than they really are, and thus drivers slow down.
Now the American Automobile Association Foundation for Traffic Safety in Washington D.C. is planning to repeat Japan’s success. Starting next year, the foundation will paint chevrons and other patterns of stripes on selected roads around the country to test how well the patterns reduce highway crashes.
(80) Excessive speed plays a major role in as much as one fifth of all fatal traffic accidents, according to the foundation. To help reduce those accidents, the foundation will conduct its tests in areas where speed - related hazards’ are the greatest--curves, exit slopes, traffic circles, and
A. They are falling out of use in the United States.
B. They tend to be ignored by drivers in a short period of time.
C. They are applicable only on broad roads.
D. They cannot be applied successfully to traffic circles.

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Passage One