第一题：选D.
American football is different from the soccer in which the plays_____.
题目：相比英式足球,美式足球有什么不同.
D,can touch the ball either with hands or with feet
手和脚都可以接触球.
分析：
文章中出现了这句话：American football is not like soccer.Players sometimes kick the ball,but they also throw the ball and run with it.
美式足球不像英式足球.选手们有的时候踢球,但是有时他们也能扔球然后跟着球跑.
这句话说明,美式足球,可踢可扔,手脚都能接触球.
第二题：选A.
Who are dancing and jumping while they cheer their favorite team on?
谁在为喜欢的队伍加油时,会又蹦又跳?
A,the cheerleaders 啦啦队队长们
分析：
文章中出现了这句话：
Many thousands of people come to watch.They all shout for their favourite to victory.Young men and women called cheerleaders come to the field to help the people cheer their favourite team on.They dance and jump as well.
数以上千的人都会去观看比赛.他们会为喜爱的队伍高呼助威.有些年轻男女被称之为啦啦队队长,也会到场帮大家为喜爱的队伍加油.他们还会又蹦又跳的.
这句话说明,粉丝们大都呼喊,喊叫着来为喜爱的队伍助威,而拉拉队队长们还会以又蹦又跳这种方式来帮粉丝们给喜爱的队伍加油.所以又蹦又跳的人应该是啦啦队队长们.