题目内容：

    It is late at night. People in Cape Town,South Africa,line up to collect water from a spring. One by one,they fill their plastic bottles. Each person can take up to 13 gallons（加仑）. Policemen stand by to keep the rules. In a few months,that number will be cut in half.

Cape Town is a city of four million people. It is running out of water. For three years,the city has faced a drought（干旱）. It is the worst in a century. Local reservoirs（水库）are mostly sand and dried earth. Officers are telling people to save water.（A）_______, the city will one day be forced to cut off the supply to homes and businesses. That day is being called Day Zero. At press time,Day Zero was expected to be June 4.（B）_______ the date may change based on water levels in local reservoirs.

"There are a lot of people who have not realized the problem." said Shirley Curry. She waited at a spring to get her share of water. "Now they suddenly realize this is for real."

On Day Zero, each person's daily water supply will drop to about 6.5 gallons. (The average American uses 80 to 100 gallons of water per day.) Lines at the city's 200 water collection points will probably get even longer.

Some places will not be included in the cutoff. The water will keep running in hospitals and schools. It will stay on in poor areas, too. This is to prevent illness. Areas popular with tourists may also have water. More than 10 million people visit Cape Town each year. Tourism provides nearly 10% of South Africa's economy.

Across the city,people are making an effort to save water. They are taking 90-second showers. They are washing their clothes less often. Using tap water to wash cars or fill swimming pools is not allowed. Those caught using too much water are punished.

For some people,rationing（定量供应）now feels normal. Kelson da Cruz keeps one container of water near the shower. Another he uses for brushing his teeth and washing his face. He uses non-drinking water to flush（冲洗）the toilet.

1.在A、B空白处各填入一个合适的单词或短语。A______________B_______________

2.将画线句子翻译成汉语。___________________________________________________________________

3."This" 指代：_____________________________________________________________________________

4.How much water will each person in Cape Town get in a few months?_______________________________

5.What's the fourth paragraph mainly about?______________________________________________________