THE AUTHOR IS TRYING TO ______. A. DEFINE WHAT A BLUE MOON IS B. COR...

Câu 17: The author is trying to ______. A. define what a blue moon is B. correct people’s false assumption about a blue moon C. predict when a lue moon will happen D. explain what the expression “once in a blue moon” means Read the following passage and mark A, B, C, or D to indicate the correct answer to each of the blanks from 18 to 22. Water is of vital importance to all living things. Without it, all living things will surely die. We also use a great

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______ of water daily in our homes, in factories, and in power stations. Most of this water is fresh water and it comes to us from reservoirs, rivers and lakes. The Earth's surface is

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______ by large areas of water which we call oceans and seas.If you have tasted the water from the sea, you will know that, unlike fresh water, seawater tastes salty. This is due to the

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______of sodium chloride which comes from the land. Rivers carry it to the sea. Although neither salt nor fresh water has any color, the sea often looks blue

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______the sunlight. The reason is that sunlight is made up of many colors. Some colors disappear quickly inthe sea but blue light bounces back, or is reflected, to the surface. This makes the sea look blue.

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______, a stormy sky will make the sea look grey. (Conquer Cloze — Judy Tilaka & Charles Xavier — SAP)