单选题
U.S. to Start $3.2 Billion Child Health Study in January

A study that will cost $3.2 billion and last more than two decades to track the health of 100,000 U.S. children from before birth to age 21 will be launched in January, U.S. health officials said on Friday.
Officials from the U.S. government"s National Institutes of Health said they hope the study, to be conducted at 105 locations throughout the United States, can help identify early-life influences that affect later development, with the goal of learning new ways to treat or prevent illness.
The study will examine hereditary and environmental factors such as exposure to certain chemicals that affect health.
Researchers will collect genetic and biological samples from people in the study as well as samples from the homes of the women and their babies including air, water, dust and materials used to construct their residences, the NIH said.
Officials said more than $200 million has been spent already and the study is projected to cost $3.2 billion.
"We anticipate that in the long term, what we learn from the study will result in a significant savings in the nation"s health care costs," Dr. Duane Alexander, who heads the NIH"s Eunice Kennedy Shriver National Institute of Child Health and Human Development, told reporters.
The study will begin in January when the University of North Carolina and the Mount Sinai School of Medicine in New York start signing up pregnant women whose babies will then be followed to age 21.
Some of the early findings will be about factors behind pre-term birth, which has become more common in recent years, according to Dr. Peter Scheidt of the NIH, who heads the study.
The people taking part will be from rural, urban and suburban areas, from all income and educational levels and from all racial groups, the NIH said.
单选题 The aim of the study is to find new ways to ______.
【正确答案】 C
【答案解析】[解析] 题意:研究的目的是为……找出新方法。
根据文章第二段最后半句“with the goal of learning new ways to treat or prevent illness”可知,这项研究的目标是研究出新的治疗和防治疾病的方法,goal与aim是同义词,故本题选C。
单选题 Researchers will collect all the following EXCEPT ______.
【正确答案】 D
【答案解析】[解析] 题意:研究者们将收集下列几项除了……。
根据文章第四段“researchers will collect...as well as samples from the homes of the women and heir babies... ”可知,研究人员将收集研究对象的基因和生物样本,以及母婴生活环境当中的空气,水,灰尘和建筑材料的样本,所以A项、B项和C项正确。故本题选D。
单选题 It is expected that through the study the nation"s health care costs ______.
【正确答案】 A
【答案解析】[解析] 题意:人们希望通过这项研究,国家的卫生保健经费……。
根据文章第六段第一句“...will result in a significant savings in the nation"s health care cost”可知,人们期待从长远角度上,此项研究成果将有利于节约国家卫生保健经费,故本题选A。
单选题 The babies of the participants will be followed ______.
【正确答案】 B
【答案解析】[解析] 题意:参与者中的婴儿将被跟踪研究……。
根据文章第一段“a study that...last more than two decades...from before birth to age 21...”可知,项目将对100,000名美国儿童的健康状况进行跟踪研究,研究对象的年龄从出生前一直到21岁,这项研究预计将持续二十余年,所以A项、C项和D项都错误,故本题选B。
单选题 Which is NOT true of the people in the study?
【正确答案】 D
【答案解析】[解析] 题意:关于研究对象哪项不正确?
根据文章最后一段“...from rural, urban and suburban areas...all income and educational levels...all racial groups”可知,研究对象将从农村,城市和郊区广泛选取,涵盖不同的收入阶层和受教育程度,以及不同的种族,所以A项、B项和C项是正确的,故本题选D。