单词：couponing
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[00:08.59]VOCABULARY [00:11.83]its whale blue whale land [00:17.76]它的 鲸 蓝鲸 陆地 [00:23.69]on land dinosaur metre weigh [00:29.87]在陆地上 恐龙 米 称...重量 [00:36.05]over ton [00:39.03]越过 吨 [00:42.00]Dialogue [00:44.75]1 L
广州小学五年级 (下) 课本(2005)
THIS IS AMERICA - Playing in the Sun and Sea at Martha's Vineyard and Nantucket BARBARA KLEIN: Welcome to THIS IS AMERICA in VOA Special English. I'm Barbara Klein. This week on our program, we tell you about two islands in Massachusetts, in the New
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Mammals developed from land-based reptiles two hundred million years ago, and most of the mammals we see today are still land based. A notable exception are the cetaceans, which we all know as dolphins and whales. How did they move from land to sea?
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Expectant moms can have very different ideas when it comes to where they plan to have their babies. Some women even choose to give birth in a warm tub of
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ANNOUNCER: Welcome to THIS IS AMERICA in VOA Special English. I'm Barbara Klein. This week on our program, we tell you about two islands in Massachusetts, in the New England area of the northeastern United States. Martha's Vineyard and Nantucket ar
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Almost every animal ever studied spends a large part of each day sleeping. Sleep is thought to play an essential role in the health of almost all animals. Because of this, scientists have long wondered how cetaceans, such as whales and dolphins, get
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