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Question 14. What does the author imply about Boston? ==== Passage 3 ==== Could you reproduce Silicon Valley elsewhere, or is there something unique about it? It wouldn't be surprising if it were hard to reproduce in other countries, because you couldn't reproduce it in most of the US either. What does it take to make a Silicon Valley? It's the right people. If you could get the right ten thousand people to move from Silicon Valley to Buffalo, Buffalo would become Silicon Valley. You only need two kinds of people to create a technology hub (中心) : rich people and nerds (痴迷科研的人). Observation bears this out. Within the US, towns have become star, up hubs if and only if they have both rich people and nerds. Few startups happen in Miami, for example, because although it's full of rich people, it has few nerds. It's not the kind of place nerds like. Whereas Pittsburgh has the opposite problem: plenty of nerds, but no rich people. The top US Computer Science departments are said to be MIT, Stanford, Berkeley, and Carnegie-Mellon. MIT yielded Route 128.Stanford and Berkeley yielded Silicon Valley. But what did Carnegie-Mellon yield in Pittsburgh? And what happened in Ithaca, home of Cornell University, which is also high on the list? I grew up in Pittsburgh and went to college at Cornell, so I can answer for both. The weather is terrible, particularly in winter, and there's no interesting old city to make up for it, as there is in Boston. Rich people don't want to live in Pittsburgh or Ithaca. So while there're plenty of hackers (电脑迷) who could start startups, there's no one to invest in them Do you really need the rich people? Wouldn't it work to have the government invest in the nerds? No, it would not. Startup investors are a distinct type of rich people. They tend to have a lot of experience themselves in the technology business. This helps them pick the right startups, and means they can supply advice and connections as well as money. And the fact that they have a personal stake in the outcome makes them really pay attention. ==== Question 14. What does the author imply about Boston? A. It has pleasant weather all year round. B. It produces wealth as well as high-tech. C. It is not likely to attract lots of investors and nerds. D. It is an old city with many sites of historical interest.
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【单选题】白天时间较长、温度较高而夜晚时间较短、气温较低的新疆等地,所产哈密瓜特别甜,主要原因不包括 [     ]
A.
阳光充足,光照强烈,光合作用的强度大、时间长,产生的糖类多
B.
夜间温度比较低,呼吸作用相对比较弱,消耗的糖类物质较少
C.
新疆等地的哈密瓜都发生了“变甜”的基因突变
D.
细胞内积累的糖类在有关酶的催化作用下,最终转化成果糖和葡萄糖等
【简答题】a limited water supply
【简答题】吸湿性和保湿性是小分子糖类化合物重要的食品特性。吸湿性是在较高空气温度条件下()的能力;保温性指在较低空气湿度下()的能力。
【单选题】在 C 语言中, int,char 和 short 三种类型数据在内存中所占用的字节数
A.
由用户自己定义
B.
均为 2 个字节
C.
是任意的
D.
由所用机器的机器字长决定
【简答题】第二代晶体管计算机的特点?
【判断题】生产冰淇淋等冷冻饮品时,使用低转化程度的淀粉糖浆和蔗糖的混合物,冰点降低较单独用蔗糖好,且冰粒细微、组织细腻、粘稠度高、甜味温和等。
A.
正确
B.
错误
【多选题】砌体按实心与否可分为( )。
A.
砌体砌体
B.
实心砌体
C.
空斗砌体
D.
砖砌体
【单选题】在C语言中,int、char和short三种类型数据在内存中所占用的字节数
A.
由用户自己定义
B.
均为两个字节
C.
是任意的
D.
由所用机器的字长决定
【单选题】用浓酸法糖化工艺中,72%的()和42%的()可以将结晶的纤维素在较低的温度下转化为低聚糖
A.
浓硫酸   浓盐酸
B.
浓盐酸    浓硫酸
C.
浓硫酸    浓硝酸
D.
浓盐酸    浓硝酸
【单选题】Which of the following statements, according to the passage, is NOT true?
A.
A limited water supply will affect industrial production.
B.
Every large city purifies and reuses its water.
C.
Purified water is not exactly as fresh as spring water.
D.
Oceans are the largest water source.
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