We learn from the passage that Ben ______ while doing his masters degree.

A . two-step controller action B . proportional, controller action C . integral controller action D . derivative controller actio

A．the cows often ran out to look for food B．the cows often had fights with their masters C．Mr. Jones and his men often beat the cows D．Mr. Jones and his men often forgot to feed the cows

A．heavier than B．really C．lighter than D．slightly heavier than

A．It was difficult to find fuel near them. B．They were not deep enough. C．They were rarely used for transportation. D．They flooded frequently. 此题为多项选择题。

A．low employment B．personal choice C．tax revenue D．home countries

A．collected by non-profit agencies B．damped into local landfills C．exported to foreign countries D．recycled by computer manufacturers

A.consumers are the only factor to determine what shall be produced B.how goods and services are produced is mainly conducted by the profit mottve C.the American economic system is exactly a market-oriented economy D.businessmen can produce more goods Ln order to earn more profits

A.World Bank has done nothing to help the poor in the world B.IMF only helps the rich in the world C.World Bank controls all the banks in the world D.There are some. demonstrations against World Bank in recent years

A.have monopolized the talk show circuit B.exploit the weaknesses in human nature C.appear at different times of the day D.are targeted at different audiences

A、an entrepreneur always has the courage to take risks B、an entrepreneur understand the market is fluctuating C、opportunities never favor those who don’t understand the market D、an entrepreneur is sensitive and responsive to the market

A．Kennedy was a good president. B．If you experience victories, tragedy will surely fall on you. C．The Kennedy family was rich because John Kennedy was the president. D．Family fame, wealth and social position may not necessarily be beneficial.

A．treasuring the culture of one's own locality B．expending new houses in one's own locality C．welcoming the siting of developments in one's own locality D．objecting to the siting of developments in one's own locality

A. It continued its escalating trajectory. B. The median CEO pay was over $10 million. C. Many board members regarded CEO's pay moderate. D. Board members took some measures to deal with CEO's high pay.

A．are equally kind and optimistic as their bosses B．appreciate and feel encouraged by the benefits package C．can't escape the unpleasant competition for power in the office D．are far away from office competition thanks to the innovation in managing

A) early starters can learn to speak within only six months B) children show a strong desire to communicate by making noises C) imitation plays an important role in learning to speak D) children have various difficulties in learning to speak

A. controversial proposals Can be found only among the presidential nominees． B. using pupils’test scores to identify ineffective teachers has been widely accepted． C. both Democratic presidential nominees support the idea of accountability． D. neither the Republican ilor the Democratic presidential nominees favor NCLB．

A．women were not willing to go out for work in the past. B．families ate lunch at a fixed time at home. C．most of the vegetables people ate were produced by themselves. D．foods sold in the grocer's shop were rare and fresh.

A．is very happy to make a change B．is a driver of the bulldozer C．is to shift to growing peaches D．is going to grow almonds