《2025年假期生活八年级综合北京教育出版社》

How Fast?
People in west countries like to take part in road race very much. Road race includes bike race and car race. There is a car race called the Raja Road Race. It is 1,000 miles long and it takes a long way on hills. A man called Gonzales takes part in the race. He is called Speedy Gonzales because of his fast speed. He often drives very fast in the race. During the first half of the race, Gonzales has been driving at an average speed of 80 miles per hour. Here is the question: If he wants to drive at an average speed of 100 miles per hour on the whole way, how fast should he drive during the second half of the race?

【词汇与表达】
average adj. 平均的 per prep. 每一 race n. 比赛
speed n. 速度 take part in... 参加……
【知识链接】
road race 指的是汽车、摩托车、自行车等越野赛,比赛在公路上进行,也叫作公路赛或公路赛车。公路赛在国内外都拥有大批爱好者,赛车手们挑战自我,完成对自我的超越。你知道吗？以自行车为交通工具的公路赛还是奥运会的经典赛事之一呢！另外,最负盛名的公路自行车赛事是环法公路自行车赛。每年的 7 月,赛手们聚集在法国,参加为期 23 天的比赛,他们要骑 3 000 多千米,还要翻越高海拔的比利牛斯山脉和阿尔卑斯山脉。在比赛过程中,路途艰辛与风景如画并存,这也正是环法自行车赛的魅力所在吧！
【活动】
问题：If he wants to drive at an average speed of 100 miles per hour on the whole way, how fast should he drive during the second half of the race?
解题步骤：
结论：He should drive at the speed of about 133 miles per hour.

答案： 结论: He should drive at the speed of about 133 miles per hour.