Question: long ago people made fires from lightning . But they had to keep the fire burning, for they couldn't start it again if there was no lightning. Later, they found out hitting two piece of stone together could make a spark . The spark could fire dry leaves. In this way they could make the fire again if it went out. Then people also learned to make a fire by rubbing. They made a hole on a big piece of wood and put a smaller stick into the hole. They turned the stick again and again. After a few minutes they got a fire. As years went by, people learned other ways to make a fire. Sometimes they used the heat from sun. they held a piece of glass in the right way and made a piece of paper on fire. About two centuries ago, people began to make matches . Matches brought people a quick and easy way to make fire. Today matches are still being used, but people have more new ways to make fires. One of them is to use an electric fire starter. Of course an electric fire starter is much more expensive than a box of matches. But it is more useful. A spark can _ . A) fire any leaves B) burn anything C) burn dry leaves D) keep fires burning
Answer: C

Question: A mother wanted to encourage her son to play the piano. She bought tickets to the concert of a great pianist. When they arrived at the theater, the mother found a friend. Sbe stopped to talk to ber friend and her son ran off. At eight o'clock'the lights began to dim ,and the concert was set to start. The mother began to look for the boy. Then, she saw her 6-year-old son on stage. He was on the piano bench playing Twinkle, Twinkle little star. The mother was very shocked. Before she could get her son back, the famous pianist himself was on the stage and quickly moved to the piano. "Don't stop. Keep playing," he said kindly to the boy. The great pianist reached down with his left hand and began filling in the bass of the song. Soon, his right arm reached around the other side and played a beautiful piece of music. Together, the two impressed people with their beautiful music. In all of our lives, we receive helping hands- some we notice, some we don't. We also have Iots of chances to give helping hands- sometimes we want people to know, sometimes we don't. Little of what we all achieve comes without other's help. What we receive we should give back What was the little boy doing when his mother saw him? A) He was listening to concert in his seat. B) He was talking to his friend. C) He was on the piano bench playing a piece of music. D) He was learning from the famous pianist.
Answer: C

Question: Many hospitals have blood banks. In these banks, blood of all types is stored. When blood is needed, it is taken from the bank. Healthy people then give blood to the bank to replace the blood that is used. Blood can be kept in the fridge for about three weeks with a kind of chemical. When people lose much of their blood because of operations or accidents, they may need transfusions . Some people may need transfusions because of illness. Sometimes only a part of the blood is used for transfusions. Plasma , the liquid part of the blood , may be given alone. Transfusions of plasma are often given when people have been badly burned. When a person gets a transfusion, he gets blood of the same type as his. Or there may be a bad reaction . To make it safer, before a transfusion is given, the blood to be used must be tested with the blood of the person who is to receive it. This testing is called cross matching of the blood. Oswald Robertson, an American doctor, was the first one to give transfusions. He used blood that had been stored for some time to help wounded soldiers in 1918 in World War One. Before a transfusion, it is important to make sure that _ . A) the blood is cold B) the blood has been stored long enough C) the blood is from people who have accidents D) the type of blood to be used is the same as the patient's
Answer:
D