全文聽(tīng)寫，英式拼法 450)=450"> [color=#408080]HINTS 第一句有一處破折號(hào) -- Mark Philip [/color]
Koalas only eat gum leaves and drink no water -- the Aboriginal word koala means "no water". But of the 500 eucalyptus species, koalas eat only about 13. The koala's digestive system enables it to survive on a diet of gum leaves which consist largely of fibre with a very low protein content. An adult koala eats around one kilo of leaves each day. In the wild it is thought that the koala lives for about ten years, although koalas in zoos may live for 20 years. The fully grown female koala measures about 60 centimetres. Males are bigger, measuring about 80 centimetres and weighs 13.5 kilograms. The koala has two "thumbs" on each forepaw, opposed to three "fingers". In climbing, it grips mainly with these, and uses its rear paws for a toe-hold in a swift "jumping" action. It seems that koala may not always have looked as they do today. A recent discovered fossil jawbone indicates an animal almost twice the size of today's typical koala. Also it may have kept to the ground and even knocked over small trees. Thank you Mark. It's an interesting talk. Koala is my favourite animal. It's lovely and cute. Philip, now it's your turn.
考拉只吃樹(shù)葉，而且不喝水——原住民語(yǔ)言里考拉就是“沒(méi)水”的意思。但是500種桉樹(shù)中，考拉只吃大約13種。考拉的消化系統(tǒng)使得它們可以只吃高纖維低蛋白的樹(shù)葉就可以生存。成年考拉每天大概要吃一公斤樹(shù)葉。一般認(rèn)為野生的考拉的壽命是十年左右，但動(dòng)物園的考拉能活到二十年。完全成熟的雌性考拉約60厘米高。雄性比雌性體型大，大約有80厘米高，重13.5公斤?？祭總€(gè)前爪上有兩個(gè)“拇指”，與此相對(duì)的是三個(gè)“其他手指”。爬樹(shù)的時(shí)候，主要就是用這些手指，后爪是用來(lái)在“跳”的時(shí)候支撐的?？祭坪醪皇且恢遍L(zhǎng)成我們現(xiàn)在看到這個(gè)樣子的。一塊最近發(fā)現(xiàn)的下顎骨化石表明，以前存在一種有現(xiàn)在兩個(gè)考拉那么大的動(dòng)物，而且他們可能在地上生活，甚至能撞倒小樹(shù)。 謝謝mark。你的演講非常有趣?？祭俏易钕矚g的動(dòng)物，他們太可愛(ài)了。philip，該你了。 ——by vincit 歡迎討論