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THE PROPERTIES OF WATER Earth is an ocean planet. About three billion years ago, life on our planet began in the deep blue seas. Ninety-nine percent of the living space on earth is in the oceans. Marine life is incredibly rich and varied. There are
Unit Seven Text It is often said that cats have nine lives, that they are lucky enough to escape from danger again and again. Here is a science fiction tale about how one such lucky escape by a cat le
It is often said that cats have nine lives, that they are lucky enough to escape from danger again and again. Here is a science fiction tale about how one such lucky escape by a cat led to a discovery that was able to change the course of people's l
quotation n.引文 Make sure this quotation is accurate. 请确定这段引文正确无误。 raw a.生的;未加工的 Some vegetables can be eaten raw. 有些蔬菜可以生吃。 Indonesia used to export a lot of raw materials to Japan, includin
[00:01.81]This is very important, [00:03.35]because we could stop people [00:04.66]from losing their memories [00:06.12]or having mental illnesses. [00:07.75]That would be very important [00:08.94]for quite a large number of diseases. [00:11.11]OK?Ri
[00:00.00]Unit 27 [00:05.71]Real life [00:06.89]Getting people to do things [00:09.35]1 The pictures show four situations [00:12.55]in which one person wants another person [00:15.02]to do something [00:16.41]Can you guess what the situations are? [0