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阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。 New ...

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项

New research shows that kids from low-income families may be falling behind their peers because an important part of their brains is underdeveloped.

Researchers from MIT’ s McGovern Institute for Brain Research compared the brains of 12-and 13-year-olds from rich families with the brains of their peers from lower-income families. They found that one particular area of the brain—the neocortex(新皮质),which plays a key role in memory and learning ability—is thinner in children from lower-income households.

This is a crucial part of the brain for young students, who are often tested based on their ability to recall large chunks of information. Children who had a thinner neocortex performed poorly on standardized tests,researchers found.More than 90% of high-income students scored above average on a statewide math and English/Language Arts standardized test,compared with less than 60% of low-income students.Differences in cortical(脑皮层) thickness could account for almost half of the income-achievement gap in this sample,researchers wrote.

“Just as you would expect, there’ s a real cost not living in a supportive environment. We can see it not only in test scores,in educational attainment,but within the brains of these children,”says psychological scientist John Gabrieli,a professor of brain and cognitive sciences at MIT and one of the study’s authors.

Since a 2011 study published by Stanford University professor Sean Reardon found that the gap between standardized test scores of high-income and low-income students has grown by about 40% since the 1960s,there’ s been a lot of research aimed at finding links between income and achievement, rather than race alone. The MIT study found low-income children were equally likely to have a thinner neocortex,no matter their races.

Gabrieli and his co-authors can’ t say exactly why poor children’ s brains develop differently because there are too many possibilities to count.Their findings do,however,underline the importance of early intervention(干预) to ensure that low-income kids get the tools they need to succeed.

1.What’ s the function of the first paragraph?

A. To list some findings.

B. To give some advice.

C. To do some comparisons.

D. To show the main idea of the text.

2.What does the underlined word “crucial” in Paragraph 3 mean?

A. Special.              B. Important.

C. Separate.             D. Unknown.

3.What John Gabrieli says in Paragraph 4 mainly shows the importance of    .

A. cognitive ability

B. educational attainment

C. having developed brains

D. living in supportive surroundings

4.What is the main idea of the passage?

A.Wealthy parents do better in raising children.

B.Differences exist between poor children and rich ones.

C.Poor children study harder due to their financial conditions.

D.Poor children have thinner neocortex than their wealthy peers.

 

1.D 2.B 3.D 4.D 【解析】 试题分析:本文属于科普说明文阅读,来自低收入家庭的孩子可能会落后同龄人,主要是因为大脑中的the neocortex(新皮质)更薄,而这种物质对于记忆以及学习能力至关重要。 1. 2. 3. 4. 【名师点睛】 猜词技巧:阅读理解的测试中经常有猜测词、短语、习语意义的题目,这些词、短语、习语要么是生词,要么是熟词新义,单靠平时积累是不够的,还要掌握一定的做题技巧。总结如下: (1)根据构词法(转化、合成、派生)进行判断 (2) 根据文中的定义、解释猜生词 ;利用事例或解释猜生词;利用重复解释的信息猜生词 (3)根据上下文的指代关系进行选择:文章中的代词it,that,he,him或them可以指上文提到的人或物,其中it和that还可以指一件事。 (4)根据转折或对比关系进行判断:根据上下句的连接词,如but,however,otherwise等就可以看到前后句在意义上的差别,从而依据某一句的含义,来确定另一句的含义。 (5)根据因果关系进行判断:俗话说,“有因必有果,有果必有因”。根据原因可以预测结果,根据结果也可以找出原因。 (6)根据同位关系进行判断:阅读中有时出现新词、难词,后面就跟着一个同位语,对前面的词进行解释,有时这种解释也用连词“or”连接。 (7)利用标点符号和提示词猜测词义。还可以表示转折、对比或不相干的意义。破折号表示解释说明。 常见问题形式有: (1)The word “…” in Line … means/can be best replaced by … (2)As used in the passage, the phrase “…” suggests… (3)From the passage, we can infer that the word/phrase /the sentence “…” is/refers to /means… (4)The word “…” is closest in meaning to … 考点:考查科普说明文阅读
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We have extra large,strong and healthy puppies born on May 29,2014 and raised on 2.5 acres fenced in Williston Highlands by American Malinois Foundation.

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•MiniSchnauzers(雪纳瑞犬)

We have 4 males and 4 females.Our puppies come with a health guarantee.They are trained and all of them have great personalities and would be a great addition to any home.These puppies are for pets only.To keep our bloodlines pure, we do not allow our puppies to be bred. We have been breeding for over 13 years and we only breed Mini Schnauzers. They are the best dogs. They are very smart. We will not ship our puppies. We have had people drive over 1500 miles to purchase our babies.

1..From Paragraph 3,we can infer that the American Malinois is    .

A.lonely                     B.active

C.experienced                D.loyal

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3.What is the author’ s purpose in writing this passage?

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