Trees are among the biggest and longest-living things on Earth, some dating back longer than the oldest buildings. But (1)_______ being nice to look at, trees also play an important role in improving the quality of our lives. On a world-wide (2)_______, forests help to slow down the effects of global warming by using up the gas known as carbon dioxide and giving (3)_______  the oxygen we need to breathe. At local neighborhood level, trees also (4)_______  important environment benefits. They offer shade and shelter, which in (5)_______  reduces the amount of energy needed to heat and cool nearby buildings; at the same time, they also remove other impurities from the air we breathe. Điền vào số 3 A. in B. away C. up D. out

Để hoàn thành câu hỏi trên, ta cần điền vào chỗ trống số 3 một từ thích hợp để hoàn thành câu. Để chọn từ đúng, ta cần xem xét cấu trúc câu và ý nghĩa của câu.

1. In this sentence, it mentions that trees "use up" the gas known as carbon dioxide and give ______ the oxygen we need to breathe.
Trong câu này, nó đề cập đến việc cây "sử dụng hết" khí carbon dioxide và sản xuất _______ là oxy mà chúng ta cần để thở.

Với cấu trúc "give + something + that we need to breathe", ta cần chọn từ thích hợp để hoàn thành câu.

Và có 4 lựa chọn:
A. in
B. away
C. up
D. out

Các cách giải:
1. Trees are among the biggest and longest-living things on Earth, some dating back longer than the oldest buildings. But (1)___besides being nice to look at, trees also play an important role in improving the quality of our lives. On a world-wide (2)___, forests help to slow down the effects of global warming by using up the gas known as carbon dioxide and giving (3)___up the oxygen we need to breathe. At local neighborhood (4)___, trees also offer important environment benefits. They offer shade and shelter, which in (5)___reduces the amount of energy needed to heat and cool nearby buildings; at the same time, they also remove other impurities from the air we breathe.

2. Trees are among the biggest and longest-living things on Earth, some dating back longer than the oldest buildings. But (1)___besides being nice to look at, trees also play an important role in improving the quality of our lives. On a world-wide (2)___, forests help to slow down the effects of global warming by using up the gas known as carbon dioxide and giving (3)___out the oxygen we need to breathe. At local neighborhood (4)___, trees also offer important environment benefits. They offer shade and shelter, which in (5)___reduces the amount of energy needed to heat and cool nearby buildings; at the same time, they also remove other impurities from the air we breathe.

Câu trả lời:
D. out

Trees offer shade and shelter, which in turn reduces the amount of energy needed to heat and cool nearby buildings; at the same time, they also remove other impurities from the air we breathe.

Forests help to slow down the effects of global warming by using up the gas known as carbon dioxide and giving out the oxygen we need to breathe.

Forests on a world-wide level help to slow down the effects of global warming by using up the gas known as carbon dioxide and giving out the oxygen we need to breathe.

Trees play an important role in improving the quality of our lives by using up the gas known as carbon dioxide and giving out the oxygen we need to breathe.