语法填空（共10小题，每小题1.5分，满分15分）
阅读下面短文， 在空白处填入1个适当的单词或括号内单词的正确形式。
One habit of those people who are smarter than everyone else is to stay up late. In movies, the creative genius always works late into the midnight hours by candlelight—and perhaps this style 41.____________(root) in fact.
A study 42.____________ experts from the London School of Economics and Political Science found that people who tend to go to bed later have 43.____________(high) IQs. 44.____________ study authors believe the root of why this is lies in our evolution, because nighttime was a more dangerous time, and our ancestors who were to stay up instead of going to sleep 45.____________(need) to be more intelligent. Also, 46.____________(stay) awake into the night was a new idea 47.____________ was attractive to curious minds.
Today, our varying living rhythms may still reflect this. “Perhaps some smart people stay up late because their internal clocks are 48.____________(simple) different，” Dr. Wai says. “Or, perhaps they stay up late because they tend to be alone, and like being up late at night without distractions to think and solve their 49.____________(problem)．” But if you are a night owl, still remember 50.____________(get) your seven to nine hours of sleep.
阅读下面短文， 在空白处填入1个适当的单词或括号内单词的正确形式。
One habit of those people who are smarter than everyone else is to stay up late. In movies, the creative genius always works late into the midnight hours by candlelight—and perhaps this style 41.____________(root) in fact.
A study 42.____________ experts from the London School of Economics and Political Science found that people who tend to go to bed later have 43.____________(high) IQs. 44.____________ study authors believe the root of why this is lies in our evolution, because nighttime was a more dangerous time, and our ancestors who were to stay up instead of going to sleep 45.____________(need) to be more intelligent. Also, 46.____________(stay) awake into the night was a new idea 47.____________ was attractive to curious minds.
Today, our varying living rhythms may still reflect this. “Perhaps some smart people stay up late because their internal clocks are 48.____________(simple) different，” Dr. Wai says. “Or, perhaps they stay up late because they tend to be alone, and like being up late at night without distractions to think and solve their 49.____________(problem)．” But if you are a night owl, still remember 50.____________(get) your seven to nine hours of sleep.
