15.A recent research shows that physical activity (體育活動) may help students do better in their classes.The research comes because educators in some countries are reducing time for activities like P.E.class.
Researchers go over the results of fourteen studies.Twelve were from the United States,one from Canada and one from South Africa.The studies appeared between 2009and 2013.They included more than 55,000children,aged six to eighteen.
Thomas Singh,one of the researchers,says the studies showed a relationship between physical activity and scores on subjects such as math,English and reading.Ms.Singh offers some possible explanations(解釋):
"There are,first,physiological(生理的) explanations,like more blood flow,and so more oxygen(氧氣) to the brain.Being physically active means there are more hormones( 荷爾蒙) produced like endorphins(腦內啡).And endorphins make your stress level lower and your mood improved,which means you will perform better in class.Also,students who take part in organized sports learn rules and how to follow them.This could improve their classroom behavior and help them know what they should do.
All in all,the finding tells us that physically active kids are more likely to do better in school.Ms.Singh says schools should consider the finding before they cut physical education programs.
77.What led the researchers to do the studies?A
A.Schools'cutting physical activity.
B.Their interest in physical activity.
C.The tests including about 55,000children.
D.Kids'unsatisfying schooling performance.
78.How many countries took part in the studies?D
A.14.
B.12
C.2.
D.3.
79.Which of the following is NOT one of the advantages of physical activity according to the passage?
C
A.Getting more blood flow.
B.Better classroom behavior.
C.Feeling relaxed and refreshed.
D.Greater ability to organize activities.
分析 這篇短文主要介紹了一項關于體育運動對學生在校表現的影響的調查報告.報告中提到了,參加體育活動有助于提高血液循環(huán)速度,改善課堂行為和提高學生組織活動的能力.
解答 答案:77.A 細節(jié)理解題.根據第一段句子The research comes because educators in some countries are reducing time for activities like P.E.class.這項研究是因為一些國家的教育工作者正在減少像體育課這樣的活動的時間.可知是由于一些學校削減體育課,故選A.
78.D 細節(jié)理解題.根據第二段句子Twelve were from the United States,one from Canada and one from South Africa.12個來自美國,一個來自加拿大,一個來自南非.可知有美國,加拿大和南非三個國家參與了這項研究.故選D.
79.C 細節(jié)理解題.根據倒數第二段句子like more blood flow,and so more oxygen(氧氣) to the brain.which means you will perform better in class.Also,students who take part in organized sports learn rules and how to follow them.This could improve their classroom behavior and help them know what they should do.可知參加體育活動有助于提高血液循環(huán)速度,改善課堂行為和提高學生組織活動的能力.沒有提到關于體育活動能讓人感到放松和神清氣爽,故選C.
點評 在通讀全文的基礎上,根據全文大意,展開邏輯思維,瞻前顧后,認真觀察選項,仔細推敲,確定最佳答案.