The team found that 14­month­olds from high­income，well­educated families used gestures to express about 24 different meanings during 90 minutes.Children from lower­income families expressed 13 meanings.

When the same children entered school at age four and a half，those from higher­income families had better vocabulary scores on standardized tests.

“At 14 months，an age when there aren’t even social­economic differences in their talk yet，we see there are differences in their gestures，”Rowe said.

The videos found that parents from wealthier families gestured more with their children than the other parents.

Rowe said the findings suggest that gestures can at least partly explain vocabulary differences between the groups，and may prove useful as the basis for interventions (干预).

“Can we control how much parents and children gesture，and if so，will it increase their vocabulary?”Rowe asked.

【解题导语】　在孩子小时候用手势同其交流的多少会影响他上学时的词汇量。

64.When is the best time for the parents to communicate with their children using gestures?

A.When their children start school.

B.When their children are four years old.

C.When their children are fourteen months old.

D.When they become rich and well­educated.

解析：选C。细节理解题。根据文章第一句话可知，在孩子14个月大的时候是父母与孩子用手势交流的最佳时期。

65.The underlined word “difference” in Paragraph 4 refers to the difference in children’s ________.

A.performance B.income

C.education D.vocabularies

解析：选D。指代题。文章第三段告诉我们孩子在刚上学时，他们在词汇方面存在差异。所以这里的difference应该指孩子们在词汇方面的差距。

66.In the research，the researchers want to find ________.

A.whether the social­economic situation relates to gestures

B.how many meanings children can express using gestures

C.what kind of children perform the best at school

D.who can help the children from low­income families

解析：选A。细节理解题。全文前后都是在强调用手势和孩子进行交流对语言和学习效果的影响，而且第七至第十一段重点强调了这一问题。

67.What is the main idea of the passage?

A.Parents should be the first teachers of their children.

B.Babies from different families speak differently.

C.Parents must teach themselves at first.

D.Babies who gesture develop bigger vocabularies.

解析：选D。主旨大意题。全文是围绕父母与孩子进行手势交流与孩子词汇量的关系进行讨论的，D项概括合理。

威廉希尔app 高中频道第一时间为您发布高中英语暑假作业：高二英语暑假作业及答案