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Bussiness and Economics Goods and services supply what people need or want. Goods are t...

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Political Terms The government of a country is its control system. Governments make law...

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Time Distribution Look at these two pie graphs. They show how these two people spend th...

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A Video Project 1 (M: Manager L: Lisa) M: Congratulations, Lisa! L: Congratulations fo...

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Dialogue 1: Missing Aircraft A: Do you have any more information about the location of ...

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Point of View 1 This man is holding a piece of fruit in his hand. The piece of fruit is...

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Relationship Advice (M: Steven's friend S: Steven) M: Hey, Steven, you know I’m your fr...

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Contemporary People (当代人) Co-founder (共同创始人) of Apple, Steve Jobs was a major figure in...

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Dental Problem A dental cavity (蛀牙) is a hole in a tooth. A cavity is caused by bacteri...

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Harry's Trip 1 Harry is an American businessman. His job requires him to do a lot of tr...

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Science A force is a push or a pull on an object. A force changes the motion of a movin...

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A Trip to Yosemite Park 1 Today Christina and her friend are enjoying themselves. This ...

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Pains and Sickness Headaches can be very painful and can last for a long time. If you h...

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昨天下午打开微信的那一刹那，内心涌动着一股小小的激动。原来是班班来邀请我于周五的结班班会上分享自己的学习经验，看到“结班”二字，我才意识到自己已经在懂你又默默坚持快半年了。 ...

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Sources of Pollution Waste water and carbon gases from farm animals are bad for the env...

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Leonardo da Vinci 1 Leonardo da Vinci is one of the greatest geniuses (天才) of all time....

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Good News & Bad News W: Hey, I've got some news, some good news and some bad news. M: O...