Сборник задач по подготовке учащихся к международным исследованиям timss и pisa
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Тимс,Пизаға дайындық
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– Electric power Скорость ветра – Wind speed Figure 12 Task 9. Antibiotics Many diseases can be cured with antibiotics. However, the positive effects of some antibiotics against puerperal fever has decreased in recent years. Question. What is the reason? A. After producing antibiotics gradually lose their activity. B. Bacteria develop resistance to antibiotics. C These antibiotics only help against puerperal fever, but not against other diseases. D. The need for these antibiotics has decreased because in recent years medical aid have greatly improved. Answer: ______________. Task 10. Water Figure 13 shows how the water, which is supplied to the urban house becomes potable. 156 Figure 13 Water treatment is often carried out in several stages, including various methods of purification. The purification process is shown in Figure 13, includes four steps (numbered 1-4). The second stage water is collected in the sump. Question 1 . How is the water purification at this stage? A. Bacteria in the water are killed. B. Water is added by oxygen. S. Gravel and sand settle at the bottom. D. Toxic substances are dissolved. Answer: ______________. Question 2. Make up the alternative option (scheme) of water purification technology from the Caspian Sea, and convert it suitable for agricultural purposes, as well as for consumption and use in urban areas Answer: ______________. Question 3. Factory Lead-nickel batteries produced wastewater discharges into a closed reservoir. What are the likely consequences of this act for the reservoir and the human inhabitants? A. Causes various diseases Yes / No B. Affects mental ability, causes aggressiveness Yes / No C. The following generations will affect all the consequences of anthropogenic pollution of water Yes / No Answer: ______________. Question 4. Calculate the amount of pure water that is wasted at the bad lock of the tap for an hour and per day, and if the glass is (250 ml) filled in a minute Answer: ______________. Question 5. Daulet spilled water into sulfuric acid to dilute it and was burned, why? A. Because sulfuric acid and water are of the same density Water Source (Reservoir or lake) The water supply to the faucet Lattice Chlorination Drain Filter Check the water quality 157 B. Above the surface of sulfuric acid there is always a pair, reaction occurs while connecting them with water. C. Mixed with water in all proportions, and the small amount of heat is emited, and the reaction takes place D. Sulfur produces little energy Answer: ______________. Task 11. Water Can the polluted water cause the following diseases? Circle "Yes" or "No" for each case (Table 2). Table 2. Can polluted water cause the following diseases? "Yes" or "No" Diabetes "Yes" / "No" Diarrhea "Yes" / "No" HIV infection or AIDS "Yes" / "No" жүктеу/скачать 3,47 Mb. Достарыңызбен бөлісу:
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