题目

2011年末中国总人口134700万人，用科学记数法表示为    ▲   万人.  答案：1.347×109解析:科学记数法的表示形式为a×10n的形式，其中1≤|a|＜10，n为整数．确定n的值时，要看把原数变成a时，小数点移动了多少位，n的绝对值与小数点移动的位数相同．当原数绝对值大于10时，n是正数；当原数的绝对值小于1时，n是负数．134700万=1347000000=1.347×109， March 22, 20II---Most restaurants in the United States offer their customers a glass of tap water at no charge with their meal, but this week many restaurants are asking dinners to pay a dollar, or more, for a glass of water. Cards on their tables explain that this small amount helps bring clean water to children around the world. It’s called the UNICEF Tap Project.“UNICEF’s Tap Project is really all about bringing attention to the fact that over 900 million people around the globe do not have access to good, clean, healthy drinking water,” says Cary Stem, who heads the US Fund for UNICEF. She adds that water-borne illness is the second-highest cause of preventable childhood death in the world.“Each and every day approximately 4,100 children die just because they don’t have that access - 4,100 every single day.”The public service campaign encourages people to help change that statistic with a simple, affordable action: paying a dollar to get a glass of tap water at a restaurant.“One dollar buys enough good, clean water for a child for 40 days,” Stem says.“The tap project has expanded since it began five years ago with 300 restaurants in New York City. This year, Stem says, about 3,000 restaurants across the country are participating in the campaign. We raised about $2.5 million over the last five years of this campaign,” says Stem. “Last year, we raised over $1 million for the first time. This year we’re hoping to top that.”Stem credits the continued success of the campaign to an army of volunteers who support the tap project and raise money in their communities.The UNICEF Tap Project is promoting its efforts with a simple motto: when you take water, give water. Currently, UNICEF works in more than 100 countries around the world to improve access to safe water and sanitation facilities in schools and communities.Stem hopes that, by participating in the project, more Americans will realize that what they often take for granted is a precious and scarce resource in many other parts of the world.小题1:Restaurants began to charge for tap water to _______.A．increase their profit B．urge customers to save waterC．raise people’s awareness of the world water problemD．collect money for those without access to safe water小题2:We can learn from the text that the Tap Project ________.A．began in New York CityB．was started by volunteersC．is hoping to collect $2.5 million this yearD．provides help for 1,000 countries in the world小题3:It can be learned that _______.A．the Tap Project began in 2006B．America suffers a serious problemC．4,100 children die of water pollution every yearD．water-borne illnesses are the biggest killer of children小题4:How does Cary Stem feel about the work of the Tap Project?A．ConcernedB．HopefulC．DisappointedD．Angry