C.one or more scientists have been hired to cheat in regard to sugar
D.scientists can do nothing without the money subsidized secretly
答案:21 C 22 D 23 A 24 D 25 C
Text 2
Undoubtedly,Internet technology will change the way we live,work,communicate and do business.But beware of those who proclaim this to be a New Era of profitability.As in the so-called New Eras of the past--brought on by earlier technological breakthroughs--this one carries the seeds of its own destruction.The phenomenal growth of Internet businesses is already fueling a Klondike-style gold rush,with far too many diggers looking for far too little gold.Economics teaches us that it is hard to become an upstart with a basically free commodity.Think of ice in the Arctic,sand in the desert,seawater in the ocean or,for that matter,the seemingly unlimited“hot air”on the Net.
In the 20th century,the proliferation of cars,radios,movies,televisions,mass retailers
26.The purpose of this passage is _______.
A.to pour cold water on the booming Internet industry