champion n.冠军；experiment n.试验；be instructed in doing sth 接受指导做某事；at a very early age在年龄很小时；Los Angeles洛杉叽；be expert at doing sth.娴熟地做。。。；hold one’s breath 动词结构)憋气，屏住呼吸；be reluctant to do sth 做某事勉强；be accustomed to 习惯于；pick up a weight拿起一件重物；the floor of the swimming pool游泳池底部；be popular with sb.某人非常喜欢的；tricycle n.三轮车；push vt.推；drag vt.拽，拖，拉；the whole length of 整个。。。的长度；come up for breath浮到水面呼吸；gasp for air 呼呼只喘
Part II：语法学习
没有新内容，从略。
Part III：综合训练
Experiments have proved (1) children can be instructed (2) swimming (3) a very early age. (4) a special swimming pool (5) Los Angeles, children become expert (6) (7 hold) their breath (8) water even (9) they can walk. Babies of two months old do not appear (10) be reluctant (11) enter the water. It is not long (12) they are (13) accustomed (14) (15 swim) (16) they can pick up weights (17) the floor of the pool. A game (18) is very popular (19) these young swimmers is the underwater tricycle race. Tricycles are lined (20) on the floor of the pool seven feet (21) water. The children compete (22) each other (23) reach (24) other end of the pool. Many pedal their tricycles, (25) most of them prefer (26) push or drag them. Some children can cover the whole length (27) the pool without coming up (28) breath (29) once. Whether they will ever become future Olympic champions, only time will tell. (30), they should encourage those among us (31) cannot swim five yards (32) they are gasping (33) air.
答案：
(1) that; (2) in; (3) at; (4) At; (5) in; (6) at; (7) holding; (8) under//in; (9) before; (10) to; (11) to; (12) before; (13) so; (14) to; (15) swimming; (16) that; (17) from; (18) that; (19) with; (20) up; (21) under; (22) against; (23) to; (24) the; (25) but; (26) to; (27) of; (28) for; (29) even; (30) Meanwhile; (31) who; (32) before; (33) for
Part IV：句子翻译
1. 试验证明儿童可以在很小的年龄接受训练学会游泳。在洛杉矶的一个特殊别的游泳池里，孩子们甚至在还没有学会走路前就成为了水下憋气高手。
2. 两个月大的婴儿并非显得不愿意入水。他们很快便会适应游泳，而且甚至可以从游泳池底部捡起重物。
3. 这些年幼的游泳健将们非常喜欢的一个游戏是水下三轮车赛。三轮车在水下七英尺深的池底排列开来。孩子们竞相抵达游泳池的另一面。很多孩子踏着三轮车，但大多数孩子宁愿推着或者拖着走。有些孩子甚至可以一次也不需要上来换气便走完全程。
4. 他们是否将成为奥林匹克冠军，时间将给出答案。同时，他们对于我们中间那些还没有游上五码便呼呼直喘的人来讲应该也算是一种鼓励吧。
答案：
1. Experiments have proved that children can be instructed in swimming at a very early age. At a special swimming pool in Los Angeles, children become expert at holding their breath under water even before they can walk.
2. Babies of two months old do not appear to be reluctant to enter the water. It is not long before they are so accustomed to swimming that they can pick up weights from the floor of the pool.
3. A game that is very popular with these young swimmers is the underwater tricycle race. Tricycles are lined up on the floor of the pool seven feet under water. The children compete against each other to reach the other end of the pool. Many pedal their tricycles, but most of them prefer to push or drag them. Some children can cover the whole length of the pool without coming up for breath even once.
4. Whether they will ever become future Olympic champions, only time will tell. Meanwhile, they should encourage those among us who cannot swim five yards before they are gasping for air.
责任编辑：虫虫
