Điền vào mỗi chỗ trống một từ thích hợp trong khung để hoàn thành đoạn văn sau quickly environmental pollution increased information Air pollution is a cause of ill-health in human beings. In a lot of countries there are laws limiting the amount of smoke which factories can produce. Although there isn't enough....... (21)........ on the effects of smoke in the atmosphere, doctors have proved that air pollution causes lung diseases. The gases from the exhausts of cars have also........ (22)........air pollution in most cities. The lead in petrol produces a poisonous gas which often collccts in busy streets surrounded by high buildings. Children who live in areas where there is a lot of lead in the atmosphere cannot think as……. (23)………. as other children and are clumsy when they use their hands. There are other long-term effects of……..(24)……….If the gases in the atmosphere continue to increase, the earth’s climatc may bccome wanner. A lot of the ice near the Poles may melt and may causc serious floods.
Câu 1: (21)
Câu 2: (22)
Câu 3: (23)
Câu 4: (24)
A.
B.
C.
D.
Câu 1: (21)
Câu 2: (22)
Câu 3: (23)
Câu 4: (24)
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B.
C.
D.
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Hóa Học lớp 12
