[单项选择]

For more than a decade, the prevailing view of innovation has been that little guys had the edge. Innovation bubbled up from the bottom, from upstarts and insurgents. Big companies didn’t innovate, and government got in the way. In the dominant innovation narrative, venture-backed start-up companies were cast as the nimble winners and large corporations as the sluggish losers.
There was a rich vein of business-school research supporting the notion that innovation comes most naturally from small-scale outsiders. That was the headline point that a generation of business people, venture investors and policy makers took away from Clayton M. Christensen’s 1997 classic, The Innovator’s Dilemma, which examined the process of disruptive change.
But a shift in thinking is under way, driven by altered circumstances. In the United States and abroad, the biggest economic and social challenges—and potential business opportunities—are problems in m
A. business people are more innovative than government officials
B. all kinds of changes are disruptive activities in some sense
C. the dilemma of any innovation is its disruptive nature
D. small businesses are more creative than large companies

[单项选择]

For more than a decade, the prevailing view of innovation has been that little guys had the edge. Innovation bubbled up from the bottom, from upstarts and insurgents. Big companies didn’t innovate, and government got in the way. In the dominant innovation narrative, venture-backed start-up companies were cast as the nimble winners and large corporations as the sluggish losers.
There was a rich vein of business-school research supporting the notion that innovation comes most naturally from small-scale outsiders. That was the headline point that a generation of business people, venture investors and policy makers took away from Clayton M. Christensen’s 1997 classic, The Innovator’s Dilemma, which examined the process of disruptive change.
But a shift in thinking is under way, driven by altered circumstances. In the United States and abroad, the biggest economic and social challenges—and potential business opportunities—are problems in m
A. will stimulate a chain of other innovations in related fields
B. should fit into a network of changes to become more effective
C. should meet economic challenges to assume social significance
D. can never solve any problem but only serves to complicate it

[填空题]Overprotective parents inhibit more than their kids’ freedom: they may also slow brain growth in an area linked to mental illness. Children whose parents are overprotective or neglectful are believed to be more susceptible to psychiatric disorders—which in turn are associated with defects in part of the prefrontal cortex.
To investigate the link, Kosuke Narita of Gunma University, Japan, scanned the brains of 50 people in their 20s and asked them to fill out a survey about their relationship with their parents during their first 16 years. The researchers used a survey called the Parental Bonding Instrument, an internationally recognized way of measuring children’s relationships with their parents. It asks participants to rate their parents on statements like "Did not want me to grow up", "tried to control everything I did" and "tried to make me feel dependent on her/him". Narita’s team found that those with overprotective parents had less grey matter in a particular area of the

[填空题]The acetaminophen poisoning caused more than haft of the acute liver failure eases in the US from 1998 — 2003.

[单项选择]Communication orally involves more than reading or talking, gesture, posture, movements may all be______to it.
A. intrinsic
B. coherent
C. appealing
D. submissive

[单项选择]Communicating orally involves more than reading or talking: gesture, posture, movements may all be ______ to it.
A. intrinsic
B. coherent
C. appealing
D. submissive

[填空题]There have been men for more than