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----- Nội dung dịch tự động từ ảnh -----
of natural
Recently (31) .... have become extremely worried about the world's population. The
problem is particularly acute in the (32) ....... countries. (33) ........, the natural resources are
becoming inadequate for the support of the increasing population. But the (34).....
resources by artificial products is not always possible. Therefore, it is necessary to conserve
resources for as long as possible. The (36)..... of artificial products is often
important. This is (37)
so in every culture. For without (38) ...
impossible to increase food production even though there is a risk of (39).
One is left with the (40) ..... problem of larger population requiring more and more food.
these (35)
it would be
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by their use.
31. A. science
B. scientist
C.scientists
D. scientific
B. developing
B. Unfortunate
32. A. developed
33. A. Fortunate
34. A. replace
35.invaluable
36. A utiliser
37. A. particular
38. A. fertilizers
39. A. pollutant
40. A. insoluble
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B. replacement
B. valualess
utilisation
B. particularly
B. fertile
B. pollute
B. unsoluble
C. development
C. Fortunately
C. placement
C. value
C. utilising
C. particularities
C. fertilization
C. pollution
C. unsolvable
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D. develop
D. Unfortunately
D. place
D. invalue
D. utilise
D. particularity
D. fertilize
D. polluted
D. unsolving