Yellow represents . It can make you think of a day.A. warm; warmth B. warmth; warmC. warm; warm D. warmth; warmth 题目和参考答案——青夏教育精英家教网—

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( ) 2. Yellow represents_. It can make you think of a_day.

A. warm; warmth B. warmth; warm

C. warm; warm D. warmth; warmth

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Every time you turn on the television or take a ride in a car, you could be adding to a problem called acid rain (酸雨).In this article, you’ll learn how acid is created, and how it affects (影响）us, and more importantly, what we all can do to prevent it.

How is acid rain created?

When people use fuels (燃料)，such as coal and oil, poisonous (有毒的）gases are given off. When these gases mix with rain, acid rain forms. Many power stations bum fuels in order to create the electricity (电）that we use in our homes and offices every day. Cars and trucks also send these gases

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How does acid rain affect us?

Acid rain damages (毁坏)everything that it touches. It poisons our rivers, ponds, lakes, and oceans along with all the life in them. It pollutes our soil and crops, harms trees, and can even kill fish and plants. Acid rain also eats away at buildings.

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