Article: Human beings have used tools for a very long time. In some parts of the world you can still find tools that people used more than two million years ago. They made these tools by hitting one stone against another. In this way, they broke off pieces from one of the stones. These chips of stone were usually sharp on one side. People used them for cutting meat and skin from dead animals, and also for making other tools out of wood. Human beings needed to use tools because they did not have sharp teeth like other meat eating animals, such as lions and tigers. Tools helped people to get food more easily. Working with tools also helped to develop human intelligence. The human brain grew bigger, and human beings began to invent more and more tools and machines. The stone chip was one of the first tools that people used, and perhaps it is the most important. Some scientists say that it was the key to success of mankind. Since 1960 a new kind of tool has appeared. This is the silicon chip . It is smaller than a finger nail, but it can store lots of information. It is an electronic brain. Every year these chips get cleverer, but their size gets smaller, and their cost gets less. They are used in watches, calculators and intelligent machines that we can use in many ways. In the future we will not need to work with tools in the old way. Machines will do everything for us. People will have plenty of spare time. But what will they do with it? Human beings used stone chips for more than two million years, but human life changed very little in that time. We have used silicon chips for only a few years, but life is changing faster every day. What will life be like twenty years from now? What will the world be like two million years from now? Question: The stone chip is thought to be the most important tool because it _ . Yes or no, is the answer "was very important to the development of mankind"?
No

(Question)
Article: Global warming is the process of earth's atmosphere heating up. Over the last 100 years, the average temperature of earth's atmosphere has gone up 1 Fahrenheit. The weather has not changed exactly the same way in every area of the planet. But scientists think that the rise in average temperature is already affecting the earth's climate. Many scientists now believe that global warming is caused by cutting down trees, producing more trash, and polluting the environment which are some of the reasons why the temperature has gone up. Many scientists believe that the biggest causes of global warming are new human technologies that release greenhouse gases into the atmosphere. The greenhouse effect is not new. Certain gases in the atmosphere, like carbon dioxide, nitrous oxide and methane, making it hard for heat energy to go into space. In the past, the climate didn't change much because nature produced just the right amount of greenhouse gases to deal with it. Today, most scientists are pretty sure that the rising temperature can't be blamed on nature. Ever since the industrial revolution in the 1700s, humans have relied on machines for daily life. And many of those machines give off a lot of greenhouse gases. An increase in the release of greenhouse gases from human activities is throwing nature off balance. The climate is a very complicated thing, but many scientists agree that the rising atmospheric temperature has already damaged the environment. Sheets of ice, called glaciers, are melting in Antarctica and other parts of the globe. As glaciers break off and melt into the oceans, they are adding warm water to the oceans and causing the sea level to rise. Over the past 100 years, the sea level has risen 6-8 inches around the world. That means land along the coasts is beginning to disappear under water. Bigger and warmer oceans are also adding to other weather problems caused by pollution in the atmosphere. Some places have received more rain, others have had bigger storms and a few areas in the world have... Question: How can greenhouse gases make the globe warm? Yes or no, is the answer "They keep heat in the atmosphere."?
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Yes

Ques: Article: A man named Smith was sitting on his roof during a flood, and the water was up to his feet. Before long a fellow in a canoe passed and shouted, "Can I give you a lift to higher ground?" "No, thanks," said Smith. "I have faith in God and he will save me." Soon the water rose to Smith's waist.(,) At this point a motor boat pulled up and someone called out, "Can I give you a lift to higher ground?" "No, thanks, I have faith in God and he will save me." Later a helicopter flew by, and Smith was now standing on the roof with water up to his neck. "Grab the rope, "shouted the pilot. "I'll pull you up." "No, thanks," said Smith. "I have faith in God and he will save me. "But after hours of struggling with water, poor exhausted Smith drowned and went to his reward. As he arrived at the Pearly Gates, Smith met God and complained about this. "Tell me, God, "he said, "I had such faith in you to save me and you let me drown. What happened?" To which God replied, "What do you want from me? I sent you two boats and a helicopter." Question: At last, poor exhausted Smith drowned and _ . Yes or no, is the answer "all of the above"?
Ans: Yes

Article: Would you believe that the first outstanding deaf teacher in America was a Frenchman? His name was Laurent Clerc. He became a friend of Thomas Hopkins Gallaudet and together they founded America's first school for the deaf. Laurent Clerc was born in a small village near Lyons, France, on December 26, 1785. When he was one year old, he fell into a fire, losing both his hearing and his sense of smell. At 12, Laurent entered the Royal Institution for the Deaf in Paris where he did well in his studies. After he graduated, the school asked him to stay on as an assistant teacher. Meanwhile, in America, Thomas Hopkins Gallaudet was studying to be a minister. He was very concerned about the lack of educational opportunities for the deaf. Therefore, in 1815, Gallaudet sailed to London, England to seek ideas on how to teach deaf people. While he was there, he met a French educator of the deaf who invited him to go to Paris to spend three months learning at the Royal Institution for the Deaf, the school where Laurent Clerc was teaching. Gallaudet accepted the offer. The two worked and studied well together. When the time came for Gallaudet to return, he asked Clerc to come with him. Clerc accepted on one condition: that he would stay in America only a short time. The two men set sail on June 18, 1816. The voyage across the Atlantic Ocean took 52 days; however, Clerc and Gallaudet put the time to good use. Clerc studied English, and Gallaudet studied sign language. They discussed the school for the deaf which they planned to open. On the long trip, they had many conversations about education and deafness. The year after they arrived, they founded a school for the deaf in Harford, Connecticut. At the school, Clerc led a busy life. He taught signs to Principal Gallaudet; he taught the pupils; and he taught hearing men who came to the school to study deaf education. In 1819, Clerc married Eliza Crocker Boardman, one of his pupils. They had six children. He retired from teaching in 1858. Although he had intended to return to... Question: On their trip from Paris to America, Clerc and Gallaudet _ . Yes or no, is the answer "studied and discussed their plans for a deaf school"?
No