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Water is of vital importance to all living things...

Câu hỏi: Read the following passage and choose the best option A, B, C or D to be used for each of the blanks to complete the following passage.
Water is of vital importance to all living things. Without it, all living things will surely die. We also use a great (34) __________ 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 Earths surface is (35) __________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 (36) __________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 in the sunlight. The reason is (37) __________sunlight is made up of many colors. Some colors disappear quickly in the sea but blue light bounces back or is reflected, to the surface. This makes the sea look blue. (38) __________, a stormy sky will make the sea look grey.
A. Moreover
B. Hence
C. Although
D. However
Kiến thức: Liên từ Giải thích:
A. Moreover: Hơn nữa
B. Hence: do đó, cũng vì lý do đó
C. Although: mặc dù
D. However: tuy nhiên
Ta chọn B theo ý nghĩa của bài.
Trích bài: Some colors disappear quickly in the sea but blue light bounces back or is reflected, to the surface. This makes the sea look blue. Hence, a stormy sky will make the sea look grey.
Tạm dịch: Một số màu biến mất nhanh chóng trên biển nhưng ánh sáng xanh bị dội ngược lại hoặc bị phản xạ lên bề mặt. Điều này làm cho biển trông xanh. Cũng bởi lý do này, một bầu trời giông bão sẽ làm cho biển trông xám xịt.
Đáp án B.
 

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