Because of refraction, the water in a tank ever looks as deep as it actually is

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CÂU HỎI KHÁC VỀ TÌM LỖI SAI TRONG CÂU

• In the early days of jet development, jet engines used a great numbers of fuel
• The principles used in air-conditioning are basically the same as those used by the human body to cool himself
• Some underground water is enough safe to drink, but all the surface water must be treated
• Schools are important, vital means by which modern education is provided
• Early factories relied on steam engines for turning out power to fabricating goods
• One problem how to institute
• An interest in architecture often involves preserving old buildings and modifying it for new uses
• The treatment of cancer presents a real urgent task
• Even on the most careful prepared trip, problems will sometimes develop
• The Indians of the southwestern United States are famous for their beautiful art work, especially handmade jewelry cast from silver, carved from stones, or decorations with beads and feathers