Câu45.A.rich B. enough C.sufficient D.abundant
Đọc kỹ đoạn văn sau và chọn phương án đúng (ứng với A hoặc B, C, D) cho mỗi câu từ 46 đến 50.
Rain forests cover less than six percent of the earth’s area, but they have 100,000 kinds of all the kinds of
plants on the earth. Three-fourths of known kinds of plants and animals call the rain forest their home. Twenty
percent of our different kinds of medicine comes from rain forests. The glues on an envelope and in shoes come
from tropical plants. Rain forests provide materials for hundreds of other products.
Rain forests are also very important to the world’s climate. The Amazon rain forest alone receives about
thirty to forty percent of the total rainfall on the earth and products about the same percentage of the world
oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making
it uncomfortable or even dangerous for life.
Saving rain forests is an international problem. One country, or even a few countries, cannot solve the
problem alone. The nations of the world must work together to find a solution before it is too late.
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