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问题 选择题

下列关于物质性质的叙述中，正确的是（　　）

A．Cl2能与金属活动性顺序表中大多数金属反应

B．N2是大气中的主要成分之一，雷雨时，可一步转化为NO2

C．硫是一种淡黄色的能溶于水的晶体，既有氧化性又有还原性

D．硅是应用广泛的半导体材料，常温下化学性质活泼

答案

A、氯气化学性质活泼，能和大多数金属反应，故A正确；

B、氮气和氧气在雷电的条件下发生反应生成一氧化氮，一氧化氮会被氧气氧化为二氧化氮，但其不能直接转化为二氧化氮，故B错误；

C、硫单质不溶于水，微溶于酒精，易溶于二硫化碳，化合价居于中间价，既有氧化性又有还原性，故C错误；

D、硅属于半导体材料，常温下化学性质不活泼，一般不易和其他物质反应，故D错误．

故选A．

选择题

下列各句中加粗字注音有误的一项是[ ]

A．今言“华（huā）”如“华实”之“华”者，盖音谬也。

B．由山以上五六里，有穴窈（yǎo）然。

C．后世之谬其传而莫能名者，何可胜（shèng）道也哉！

D．至于幽暗昏惑而无物以相（xiàng）之。
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填空题

Bush’s MBA


Twenty-six of 42 presidents, including Bill Clinton, were lawyers. Seven were generals. George W. Bush becomes the first with an MBA.
Those who have had Bush for a boss since the mid-1980s—in the (1) of oil, baseball and Texas state government—describe his management (2) as straight from the pages of the organizational-behavior (3) he studied while getting his masters of business administration (4) at Harvard University in 1975.
He manages by what is known (5) "walking around," having learned that sitting behind a desk and passing out memos does (6) to energize anyone.
He has a reputation for fueling "creative tension" (7) his subordinates, encouraging them to take and defend opposing (8) . That sacrifices harmony, but puts ideas to the test and lets Bush (9) above the fray, where he can offer guidance instead of barking (10) . Imagine the creative tension that may erupt (11) the likes of Secretary of State-designate Colin Powell and Defense Secretary— (12) Donald Rumsfeld.
Above all, former employees say that he is a master at delegating (13) installing measures of accountability—ways of knowing (14) subordinates are getting the job done without looking (15) any shoulders. That frees Bush for strategic thinking—perhaps (16) two words hammered into MBA students most—which means thinking (17) to seize opportunities and to derail threats to the best of plans.
"George was my (18) ," says Tom Schieffer, who served as president of the Texas Rangers under Bush (19) 1991 and 1995. "But he never made me feel that way. He went out of his way to treat me as a (20) , not a subordinate."
That’s one trait that might be of concern, says Michael Useem, director of the Wharton Center for Leadership and Change at the University of Pennsylvania. It’s important for subordinates to feel part of the team, but not just because the boss craves popularity. Just as in the military, it must be understood who is in charge when the final order is given.
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