Chọn đáp án đúng:
Water, one of the two elements that are essential to life, covers 90 percent of the earth’s surface. However, despite appearances, water that is drinkable is rare on our planet. In the past, we have considered air and water to be free; but we cannot do so any more. Although we have oceans, seas, rivers, and glaciers, we need to protect our drinking supplies. As global warming increase, ice floes melt into the oceans. The deserts are increasing in size as they encroach upon and absorb arable land. Drought and scarcity of water are an increasing feature of our everyday lives.
A good example of our problems is California. It has a reputation as a fertile state. Nevertheless, for years it has been short of water, and, since the 1980s, has been suffering from prolonged drought. Florida, too, has water problems and is trying to stop salt water from seeping into its underground reserves. Floods occur regularly but do not provide enough water to compensate for periods of drought. Both the bloods and the drought demonstrate that we lack control and that we are unable to manage this primary resource.
1. According to this article, what are the two “elements” that are essential to life?
A. Water and milk B. Rice and water
C. Water and air D. Fire and water
2. Which of the following words is a synonym of “free” in the first paragraph?
A. Easy B. Without cost C. Everywhere D. Unattached
3. In the second paragraph, what is Florida?
A. A river B. A glacier C. A village D. A state
4. Which of the following is NOT a synonym of “demonstrate” in the last sentence?
A. Prove B. Show C. Give evidence of D. March
5. What does “it” in the first line of second paragraph refer to?
A. California B. Drough C. Florida D. The problem of salinity
