2022教育周报英语七年下册德州专版答案

语篇导读】运动有益于体质健康,但是过量运动则对心理健康有害。如果毎天运动超过三个小时的话,将会使人们产生不运动就很难受的感觉,这跟不运动对心理健康造成的危害是一样的28.A【解析】细节理解题。根据第一段“ Exercise has longbeen known to improve physical health”可知,很久以来,人们认为运动能改善人们的体质。故选A29.B【解析】推理判断题。根据第三段中的“ overdoingexercise could have a negative impact on your mentalwellbeing,"结合第四段中的“ Exercising for45 minutes,three to five times a week, has the biggest benefits”可知,过犹不及,运动过量不利于心理健康,而每周3到5次,每次45分钟的运动对人的益处最大,由此判断,适量运动对心理健康有益,故选B。30.D【解析】细节理解题。根据第四段中的“ team sportsare associated with the lowest mental health burden maydicate that social activities promote resilience(恢复力)and reduce depression by reducing social withdrawal andisolation, giving social sports an edge over other kinds"A知,团队运动使人们避免社交退缩和孤独,提高恢复力,减少压力,故选D31.B【解析】推理判断题。根据最后一段中的“ they notedthat people doing extreme amounts of exercise might haveformed a habit and without doing exercise they feel empty可知,如果每天不运动,他们会感到很空虚,由此判断,他们会强迫自己去运动的,故选B。

【解题分析】没有说明气体所处的状况,故气体反应物的总体积不一定是0.224L,A项错误;生成物NH4Cl为离子化合物,不存在分子,B项错误;1 mol nh4Cl中NH键的物质的量为4mol,则0.005 moI nh4Cl中NH键个数为0.02NA,C项正确;由于NH水解,故所得溶液中NH数目小于0.005NA,D项错误。【答案】C

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