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Nhằm giúp các bạn học sinh có tài liệu ôn tập những kiến thức cơ bản, kỹ năng giải các bài tập nhanh nhất và chuẩn bị cho kì thi sắp tới được tốt hơn. Hãy tham khảo Đề thi KSCĐ môn tiếng Anh lớp 12 năm 2016-2017 lần 3 - THPT Ngô Gia Tự - Mã đề 325 để có thêm tài liệu ôn thi. | Rock carvings suggest that Stone Age people were hunting whales for food as early as 2,200 B.C. Such (31) hunting is still practised today in a number of societies including the Inuit people of Greenland and North America. Whaling became big (32)_ from the seventeenth century as the demand for whale bone and whale oil rose, and the humpback and sperm whales were hunted in increasing large number. (33) just as stocks of these species began to fall, the explosive harpoon gun was invented. This weapon, together with the development of steam-powered ships, enable the whaler to hunt the fast moving fin and blue whales. In 1905, the whaling (34) moved the water of Antarctica. The introduction of massive factory ships enabled the whales to be processed at sea. As a result, the blue whale had virtually disappeared by the 1950s. In 1946, The International Whaling Commision was established to maintain the declining whale populations. Quotas were set but these were often ignored and the numbers continued to fall. Hunting of many species continued until 1986 when the IWC finally responded to international (35) and a band on commercial whaling was introduced.
