题目

完形填空 Which comes first, happiness or money? Are richer people1? And 2how do people get richer? A recent study could tell you the answer. The study3thousands of teenagers and found that those who felt better about4as young adults 5 to have higher incomes by the time they 629. Those who were happiest earned an average of $8,000 more than those who were the most7. The researchers, from University College London and the University of Warwick, say that very gloomy（沮丧的）teens, no matter how tall or smart they were, earned 10% less than their peers8the happier ones earned 930% more. 一个长方形的周长为a厘米，宽边比长边短5厘米，则这个长方形的长边的长度是A．（a+5）÷4B．（a+2×a）÷2C．（a÷2-5）÷2D．（a÷2+5）÷2