题目内容
（请给出正确答案）
A．mustn’t have washed
B．cannot have washed
C．needn’t have washed
D．shouldn’t wash
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“You（）all those clothes by hand! You have a washing-machine to do that kind of thing”相关的问题
To find Kim Hyung Gyoon 's office in Samsung's R&D complex, just follow the baskets of dirty clothes. No, Kim is not running the company laundry. As chief of Samsung's Washing & Cleaning Technology Group (WCTG) , he's the man behind a new washing machine that deposits tiny silver particles (small pieces of things) -about 1110, 000 the thickness of a human hair-onto clothes to make them germ-and-odor-free without the need for hot water. The device represents the first mass-produced application of this type of nanotechnology-the science of very small struc- tures-to home appliances. "In summer of 2002, I asked everyone in the office to take off their socks, " says Kim. "I took one sock from each person and placed it in a regular washing machine;the others were washed in a machine with the Ag+ Nano System. The next day, I asked everyone to check the odor of their socks after a day's wear. One began to produce a strong unpleasant smell, and the other was odorless. "
Kim says he came up with the idea five years ago while on a business trip to Japan, where he learned of a brand of socks that retained their freshness even after many days of unwashed wear and tear. Tiny sticks of silver with germ-killing chemicals were woven into the fabric. When he got back to Seoul, Kim applied the principle to washing machines.
According to the Korea Testing & Research Institute for the Chemical Industry, Samsung's de- vice kills 99.9% of germs. Kim says garments stay germ-free for up to a month after being laun-dered. The Ag+ Nano device went on sale in March 2003 and costs around $1,150; the revolu- tionary technology is also being used in Samsung's refrigerators and air conditioners.
No wonder: consumers seem to like a little silver in their spin cycles. Since Samsung's nano-armed products were first launched, they have brought in an estimated $779 million in revenue. O-verall, nanotech has been one of science's fastest-growing fields in recent years, with potential ap-plications in fields as diverse as energy production and toothpaste manufacture. The nanotech mar-ket is projected to be worth $1 trillion by 2015.
56. Which of the following best describes the nature of Kim Hyung Gyoon's work？
[ A] Product development,
[ B] Market investigation.
[ C] Research designing.
[ D] Sales promotion.
B．She is too young to make a reliable judgment
C．She is professional enough to predicate it wisely
D．She doesn’t follow what others have said about it
B．测试难度要在同一层次上
C．测试要以情感态度价值观为重点
D．测试题不必兼顾不同水平的学生
B．罔不因势象形（《核舟记》）
C．乃不知有汉，无论魏晋（《桃花源记》）
D．衣食所安，弗敢专也（《曹刿论战》）
B．to lead; to find
C．leading; to find
D．leading; finding
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