(Viên chức Mầm non) 5000+ câu trắc nghiệm Ngoại ngữ có đáp án - Unit 10

II.   Fill in each blank with one appropriate word from the box.

          biodiversity       vulnerable          extinct         habitat        reserves         awareness

       deforestation          overexploitation          conservation           contaminated

III.    Complete the passage with the correct form of the words in brackets.

Over 8,300 plant species and 7,200 animal species around the globe are threatened with (1) __________ (extinct), and many thousands more become extinct each year before (2)__________ (biology) can identify them. The primary causes of species extinction or (3) __________(endanger) are habitat (4) __________ (destroy), commercial (5) __________(exploit) (such as plant collecting, hunting, and trade in animal parts), damage caused by nonnative plants and animals introduced into an area, and (6) __________(pollute). Of these causes, direct habitat destruction threatens the greatest number of species. Since the 1600s, the rate of extinction has accelerated (7) __________(rapid) because of human population (8) __________ (grow) and human resource (9) _________ (consu me). Many biologists believe that we are in the middle of the greatest mass extinction episode since the (10) __________ (appear) of the dinosaurs 65 mi llion years ago.