题目内容
（请给出正确答案）
A、a) beans
B、b) potatoes
C、c) tomatoes
D、None of the above
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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(遗传的) 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(从长远说来), 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(使报名从事) pregnant women whose babies will then be followed to age 21.
Some of the early findings will be about factors behind pre-term birth (早产), 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.
The aim of the study is to find new ways to ______.
A．conduct research
B．track public health
C．prevent or treat illness
D．speed up development
A new study on birds’ sleep has revealed that ________.
A) half brain sleep is found in a wide variety of birds
B) half brain sleep is characterized by slow brain waves
C) birds can control their half brain sleep consciously
D) birds seldom sleep with the whole of their brain at rest
Why is Dr. Brown not planning a new study of all of Randolph Chemical holdings？
A．It would be very expensive.
B．It would take too much time.
C．There are not enough employees available to help.
D．Darren Consulting has already completed the study.
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 Iaunched 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 af- fect 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 con- struct 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 lea:m from the study will result in a significant savings in the nation's health care costs, " Dr. Duane Alexander,r 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 educa-
tional levels and from all racial groups, the NIH said.
The aim of the study is to find new ways to____.
A.conduct research
B.track public health
C.prevent or treat illness
D.s.peed up development
A．While
B．It is the
C．When the
D．With the
Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.
Lead deposits, which accumulated in soil and snow during the 1960's and 70's, were primarily the result of leaded gasoline emissions originating in the United States. In the twenty years that the Clean Air Act has mandated unleaded gas use in the United States, the lead accumulation worldwide has decreased significantly.
A study published recently in the journal Nature shows that airborne leaded gas emissions from the United States were the leading contributor to the high concentration of lead in the snow in Greenland. The new study is a result of the continued research led by Dr. Charles Boutron, an expert on the impact of heavy metals on the environment at the National Center for Scientific Research in France. A study by Dr. Boutron published in 1991 showed that lead levels in arctic (北极的) snow were declining.
In his new study, Dr. Boutron found the ratios of the different forms of lead in the leaded gasoline used in the United States were different from the ratios of European, Asian and Canadian gasoline and thus enable scientists to differentiate (分区) the lead sources. The dominant lead ratio found in Greenland snow matched that found in gasoline from the United States.
In a study published in the journal Ambio, scientists found that lead levels in soil in the Northeastern United States had decreased markedly since the introduction of unleaded gasoline.
Many scientists had believed that the lead would stay in soil and snow for a longer period.
The authors of the Ambio study examined samples of the up per layers of soil taken from the same sites of 30 forest floors in New England, New York and Pennsylvania in 1980 and in 1990. The forest environment processed and redistributed the lead faster than the scientists had expected.
Scientists say both studies demonstrate that certain parts of the ecosystem(生态系统) respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.
The study published in the journal Nature indicates that ______.
A．the Clean Air Act has not produced the desired results
B．lead deposits in arctic snow are on the increase
C．lead will stay in soil and snow longer than expected
D．the US is the major source of lead pollution in arctic snow
A.enlightened
B.enlightening
C.protested
D.protesting
Which of the following about the New Jersey study is TRUE？
A．There is no evidence to support the New Jersey study.
B．New Jersey has created a new Head Start to help disadvantaged kids.
C．Sending children to school at the age of four is not going to help.
D．Two years of pre-kindergarten were better than one.
What does the new Peabody study find？
A.Pre-K achievements usually do not last long.
B.The third grade marks a new phase of learning.
C.The third grade is critical to children's development.
D.Quality has not been the top concern of pre-K programs.
Which of the following is implied in the passage？
A．The study of language is the same as the study of anthropology
B．The study of language has reinforced anthropologists in their view that there is no hierarchy among cultures.
C．The study of languages has discredited anthropological studies
D．The study of languages casts a new light upon the claim of anthropologists
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