Tiếng anh bằng A –L107 1) Indiscriminately dumping of waste materials and inadequate sewage treatment are two serious causes of environmental pollution. a) A b) B c) C d) D 2) The builders of the variety ancient cliff ruins scattered throughout the canyons and mesas of the arid Southwest of the U nited States are known as the cliff dwellers. a) A b) B c) C d) D 3) A fragrant plant has tiny sacs that makes and stores the substances that give it a pleasant odor. a) A b) B c) C d) D 4) Nomadic hunter and gatherer societies have access to only a limited amount of food in an area and moved on when they have exhausted each locality. a) A b) B c) C d) D 5) Collagen, a strong rubbery protein, supports the earflaps and the tip of nose in humans. a) A b) B c) C d) D 6) The outer layer of the heart, called the pericardium, forms a sac in what the heart lies. a) A b) B c) C d) D 7) Wood from the ash tree becomes extremely flexibly when it is exposed to steam. a) A b) B c) C d) D 8) The ability to talk is one of the skill that make humans different from the rest of the animal world. a) A b) B c) C d) D 9) In plane geometry, the sum of the internal angles of any triangle has always equal to 180 degrees. a) A b) B c) C d) D 10) Polar bears are bowlegged and pigeon- toed, adaptations that enable this massive animals to maintain their balance as they walk . a) A b) B c) C d) D . internal angles of any triangle has always equal to 180 degrees. a) A b) B c) C d) D 10) Polar bears are bowlegged and pigeon- toed, adaptations that enable this massive animals to maintain. plant has tiny sacs that makes and stores the substances that give it a pleasant odor. a) A b) B c) C d) D 4) Nomadic hunter and gatherer societies have access to only a limited amount. Tiếng anh bằng A –L107 1) Indiscriminately dumping of waste materials and inadequate sewage treatment are two serious causes of environmental pollution. a) A b) B c) C d)