用美國小孩的方法學(xué)英語最有效：自然科學(xué)
來源：育路教育網(wǎng)發(fā)布時(shí)間：2011-08-17
Tales of Tail 動(dòng)物尾巴的作用
睡眠 （4th Grade）
Tales of Tail
Many animals have tails. They use their tails for many different purposes. For instance， some animals use their tails as flyswatters. Have you ever seen a cow flicking its tail back and forth？ It's getting rid of bugs. Horses use their tails in this way， too.
Some animals hang by their tails. Monkeys often do this. Then they can use all four of their paws for other things， such as eating. Another animal that uses its tail as a "hanger" is the opossum. The opossum also uses its tail to help it climb trees.
Animals that live in the water use their tails to help them swim. A fish moves its tail from side to side. The rest of its body curves in the opposite direction from its tail. Alligators and crocodiles also swing their tails as they swim. Their large tails give them power and speed.
The kangaroo has a large， useful tail. It is like a chair. The kangaroo leans on its tail to rest. The tail is also good for leaping and landing. It helps the kangaroo to keep its balance. This is important because an adult kangaroo can leap as far as 15 feet at a time.
A fox has a big， bushy tail. This is a good tail to have on cold nights. The fox can put its tail over its nose and paws while it sleeps. The tails is a blanket that keeps the fox warm.
Some animals don't keep their tails with them at all times. One example is the lizard. If an enemy pulls the lizard's tail in a struggle， the tail breaks off. The lizard leaves its tail and runs to safety. Don't worry！ The lizard will soon grow a new tail.
Words and Phrases 單詞和短語
for instance 例如，比如
flyswatter ['flai？sw？t？] n. 蒼蠅拍
flick [flik] vt. 輕拍，輕彈
back and forth 來回地
get rid of 除掉，去除
opossum [？'p？s？m] n. 負(fù)鼠
from side to side 左右（搖擺）
curve [k？：v] v. （使）彎成弧形
alligator ['？li？geit？] n. 短吻鱷
crocodile ['kr？k？dail] n. 鱷魚
kangaroo [？k？？g？'ru：] n. 袋鼠
bushy ['bu？i] adj. 濃密的
lizard ['liz？d] n. 蜥蜴
break off （使）分離；（使）脫離
譯 文
動(dòng)物尾巴的作用
很多動(dòng)物都有尾巴，它們的尾巴有不同的用途。比如，有些動(dòng)物把它們的尾巴當(dāng)蒼蠅拍。你是否見過一頭牛來回不停地輕彈著尾巴以驅(qū)趕蚊蟲？馬的尾巴也有這樣的用途。
有些動(dòng)物的尾巴用來懸掛自己。懸掛是猴子最常做的事情。這樣，它們就可以騰出四肢去做其他的事情，比如吃東西。負(fù)鼠也是一種把尾巴當(dāng)掛鉤使的動(dòng)物，除此之外，負(fù)鼠的尾巴還有助于它攀爬樹木。
居住在水里的動(dòng)物，它們用尾巴來幫助自己在水里游來游去。魚就是通過用尾巴左右搖擺，身體呈與尾巴相反方向的彎曲來游動(dòng)的。短吻鱷與鱷魚也是通過擺動(dòng)尾巴來游動(dòng)，此外尾巴還能為它們提供力量和速度。
袋鼠也有一條大的、有用的尾巴。尾巴對(duì)它們來說就像一把椅子，它可以倚靠在上面休息。此外，尾巴還有助于袋鼠跳躍、著陸和保持身體的平衡，這點(diǎn)很重要，因?yàn)榇笠惶透哌_(dá)15英尺。
狐貍也有一條大的、絨毛濃密的尾巴，這條尾巴在寒冷的夜晚真是有用極了。狐貍睡覺時(shí)，尾巴能夠遮蓋其鼻子和四肢，這時(shí)候尾巴就如同一條毛毯，起到御寒的作用。
還有一些動(dòng)物，它們的尾巴可以脫離身體。蜥蜴就是這種動(dòng)物之一，當(dāng)敵人扯起蜥蜴的尾巴時(shí)，它就會(huì)自行斷尾，逃生。不過不用擔(dān)心，不久它還會(huì)長(zhǎng)出一條新的尾巴。
Practice
1. Animals use their tails for different ___________ .
A. periods B. purposes C. seasons D. lengths
2. The monkey uses its tail to ___________ .
A. swim B. climb C. hang D. talk
3. Alligators and crocodiles use their tails for ___________ .
A. fishing B. flying C. power D. curves
4. A kangaroo's tail is also helpful for ___________ .
A. jumping B. swimming C. walking D. crying
練 習(xí)
1. 動(dòng)物的尾巴有不同的 ___________ .
A. 時(shí)期 B. 用途 C. 季節(jié) D. 長(zhǎng)度
2. 猴子用它的尾巴來 ___________ .
A. 游泳 B. 攀爬 C. 懸掛 D. 交談
3. 短吻鱷和鱷魚用它們的尾巴來 ___________.
A. 釣魚 B. 飛翔 C. 力量 D. 彎曲
4. 袋鼠的尾巴對(duì) ___________ 也很有用。
A. 跳躍 B. 游泳 C. 行走 D. 哭泣
答 案
1. B 2. C 3.D 4. A
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