单项选择题

It’s generally accepted that there is a correlation between a child’s educational attainment and a family’s poverty level, but new research shows that the problem may take root earlier than previously thought.
A new study in Psychological Science found that at 10 months old, children from poor families performed just (62) children from wealthier families, but by the time they turned 2, children from wealthier families were scoring (63) higher than those from poorer ones.
"Poor kids aren’t even doing as well (64) school readiness, sounding out letters and doing other things that you would expect to be (65) to early learning." Elliot M. Tucker-Drob of the University of Texas at Austin, lead author of the study, said in a press (66) .
To (67) the study, researchers (68) the mental abilities of about 750 pairs of fraternal(异卵的) and identical (同卵的) twins from all over the U.S. The participants’ socioeconomic (69) was determined based on parents’ educational attainment, occupations and family income.
Each child was asked to (70) tasks that (71) pulling a string to ring a bell, placing three cubes in a cup, matching pictures and sorting pegs by color first at 10 months and (72) when they were 2 years old. At this time, researchers discovered that during the 14-month window between the aptitude tests, gaps in (73) development had started to occur. Children from wealthier families had started to consistently outperform those from poorer ones.
Researchers (74) to disprove a genetic explanation by (75) the aptitude tests of each set of twins.
The (76) of the comparison is that children’s genetic (77) is oppressed by poverty, though the study stopped short of drawing a scientific (78) as to what specifically was causing the achievement (79) . Researchers did assume that, (80) speaking, poorer parents may not have the time or (81) to spend playing with their children in stimulating ways.

A.in accordance with
B.in case of
C.in contrast to
D.in terms of
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Abraham Maslow asserts that all human have basic needs and that these needs can be arranged in a hierarchy, that is, people don’t (36) themselves with higher-level needs until lower-level needs are satisfied. Maslow termed the two levels of needs at the bottom of the hierarchy physiological(生理的) needs and safety needs. People’s physiological needs are for air, water, and food. Their safety needs are for security and (37) . Maslow called these two levels survival needs; satisfaction of these needs is necessary for basic human (38) . Once survival needs are (39) ,the higher-level needs which are called psychological needs-the need to belong, the need for esteem, and the need for self-actualization--become (40) important. These needs may affect people’s group memberships throughout their lives. Once people have satisfied their basic survival, physiological and safety needs, they turn their (41) to a social or belongingness need. People need to feel that they are a part of some groups. Relationships such as friendships. romantic (42) and families help satisfy this need for companionship and acceptance, as does involvement in social, community or (43) groups. After the first three needs have been satisfied, esteem need becomes more important. (44) Finally. people have a need for self-actualization. This need differs from the first four needs. The former needs (45) actualization is called a being need, which involves people trying to be all that they can be and living life to be fullest. (46)