练习1（单选）：公共政策评估是对（ ）所进行的研究。

如果在工作分析时缺乏动态考量的能力，将导致工作分析的内容缺少时效性和经济性。( )

公共资源配置要优先满足教育和人力资源开发需要。

Too many debts in a company easily _____ bankruptcy.

不随着产量变动而变动的成本称为（    ）

选择题

　　Babies who are breast-fed may be more likely to be successful in life, a new study published Tuesday suggests. The study followed more than 3,000 babies into adulthood in Brazil. The researchers found those who were breast-fed scored slightly higher in intelligence tests in their 30s, stayed in school longer and earned more money than those who were given formula（配方奶粉）.

　　“Breast-feeding not only has short-term benefits, but also breast-feeding has long-term benefits, ” says Bernardo Lessa Horta of the Federal University of Pelotas in Brazil, who led the study being published in The Lancet Global Health.

　　Doctors have long known that breast-feeding can be good for a baby's health. This is especially true in poor countries, where water can be contaminated. For instance, a baby given formula in developing countries is 14 times more likely to die in the first six months than one who's breast-fed. In the U.S., some research has suggested that breast-feeding may raise a baby's IQ（智商）by a few points. But a recent study with siblings（兄弟姐妹）found little advantage to breast-feeding.

　　Horta says these previous studies didn't follow children into adulthood to see if breast-feeding had long-term effects. So Horta analyzed data collected from 3,493 volunteers he and his colleagues have been following since birth. They are now in their 30s. First, the researchers gave the subjects IQ tests. Those who were breast-fed for 12 months or more had IQ test scores that were 3.76 points higher than those who were breast-fed for less than one month, the team found.

　　When Horta and his colleagues looked at how much education the subjects had gotten and how much money they were making, they also found a clear difference: Those who were breast-fed the longest stayed in school for about an extra year and had monthly salaries that were about a third higher.

　　1. From the passage, we learn that Horta    1    .

　　A. is from Brazil
　　B. conducts his research in the U.S.
　　C. has 30 researchers on his team

　　2. Which of the following about those who were breast-fed is NOT mentioned?   2   
　　A. They stayed longer in school
　　B. They were happier
　　C. They were smarter

　　3. Which of the following is TRUE?   3   

　　A. Doctors don't understand the benefits of breast-feeding.
　　B. Horta is concerned with water contamination in poor countries.
　　C. Horta's research project lasted about 30 years

　　4. The word contaminated in Paragraph 3 is closest in meaning to    4    .

　　A. finished
　　B. interested
　　C. polluted

　　5. Which of the following is an appropriate title for this passage?   5   

　　A. Researchers Have Pointed Out the Disadvantages of Breast-feeding
　　B. Researchers Have Found Out the Shortcomings of Formula
　　C. Breast-feeding Improves Chances of Success

消费者均衡就是消费者获得了最大边际效用。

实施创新驱动发展战略，要坚持“四个面向”，即面向世界科技前沿、面向经济主战场、面向（  ）、面向人民生命健康。

 奖惩对象应包括以下哪些选项？（   ）

简述短期总供给曲线的特征及其经济含义。