Choose the best answer:
An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves. At the Earth's surface, earthquakes are recognized (25) _____ vibration, shaking and sometimes displacement of the ground. The vibrations may vary in (26) _____. They are caused mostly by slippage within geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. The underground point of (27) _____ of the earthquake is called the focus. The point directly above the focus on the surface is called the epicenter. Earthquakes by themselves rarely kill people or wildlife. It is usually the secondary events (28) _____ they trigger, such as building collapse, fires, tsunamis (seismic sea waves) and volcanoes, that are actually the human disaster. Many of these could possibly be avoided by better construction, safety systems, early warning and (29) ____ planning
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Lời giải:
Báo saiGiải thích: Ở đây dùng cấu trúc song song liệt kê các cụm danh từ “better construction, safety systems, early warning and (29) evacuation planning”, do đó từ cần điền phải là một danh từ.
Tạm dịch: Nhiều trong số này có thể tránh được bằng cách xây dựng tốt hơn, hệ thống an toàn, cảnh báo sớm và lập kế hoạch sơ tán.