user: Read the article and select the best answer. Article: Do you want to know how and why a fall leaf changes color? We first have to understand what leaves are and what they do. Leaves are the world's food factories. Plants take water from the ground through their roots and take CO2from the air. Plants use sunlight to turn water and CO2into glucose , a kind of sugar. Plants use it as food for energy and growing. A chemical called _ in the leaves gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees "know" to begin getting ready for winter. During winter, there is not enough sunlight or water. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories. As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples , sunlight and the cool nights of autumn turn the glucose in the leaves into a red colour. And we can enjoy the beautiful red leaves during autumn. Question: This passage tells us  _  . Options: A: the plants can grow well only with the sunlight B: there are all kinds of plants on the earth C: maple leaves change the color as other trees D: not all the colors of the leaves are from chlorophyll
D
Read the article and select the best answer. Article: We were standing at the top of a church tower. My father had brought me to this spot in a small town not far from our home in Rome. I wondered why. "Look down, Elsa," Father said. I gathered all my courage and looked down. I saw the square in the center of the village, And I saw the criss-cross  of streets leading to the square. "See, my dear," Father said gently, "There is more than one way to the square. Life is like that. If you can't get to the place where you want to go by one road. try another." Now I understood why I was there, Earlier that day I had begged my mother to do something about the awful lunches that were served at school. But she refused because she didn't believe the lunches were as bad as I said. When I turned to Father for help, he would not interfere . Instead, he brought me to this high tower to give me a lesson. By the time we reached home, I had a plan. At school the next day, I secretly poured my lunch soup into a bottle and brought it home. Then I asked our cook to serve it to Mother at dinner. _ She swallowed one spoonful and sputtered, "The cook must have gone bad!" Quickly I told what I had done, and Mother stated firmly that she would deal with the matter of lunches at school the next day! In the following years I often remembered the lesson Father taught me. I began to work as a fashion designer two years ago. I wouldn't stop working until I tried every possible means to my goal. Father's wise words always remind me that there is more than one way to the square, Question: What did the author's mother think of her lunch soup after she tasted it? Options: A: It wasn't so bad as the author said. B: It was delicious. C: It couldn't be worse. D: It was as good as her cook did.
C
Q: Read the article and select the best answer. Article: A group of swans flew down to a beach where a crow  was jumping around. The crow watched them with disdain . "You have no flying skills at all!" he said to the swans. "All you can do is to move your wings. Can you turn over in the air? No, that's beyond you. Let's have a flying competition. I'll show you what real flying is!" One of the swans, a strong young male, took up the challenge. The crow flew up and began to show his skills. He flew in circles, performed other flying tricks, and then came down and looked proudly at the swan. Now it was the swan's turn. He flew up, and began flying over the sea. The crow flew after him, making all kinds of comments  about his flying. They flew on and on till they couldn't see the land and there was nothing but water on all sides. The crow was making fewer and fewer comments. He was now so _ that he found it hard to stay in the air, and had to struggle to keep himself from falling into the water. The swan pretended  not to notice, and said, "Why do you keep touching the water, brother? Is that another trick?" "No," said the crow. He knew he had lost the competition. "I'm in trouble because of my pride! If you don't help me, I'll lose my life..." The swan took pity on him, and took him on his shoulders and flew back to the beach. Question: What does the story tell us? Options: A: No pains, no gains. B: The early bird catches the worm. C: Pride goes before a fall. D: Practice makes perfect.
A: C
*Question*
Read the article and select the best answer. Article: The world lost one of the most respected leaders. Nelson Mandela, the former   South African president, passed away on Dec. 5, 2013. The whole world felt sorry about the death of Mandela, a great man of history. Mandela is mostly remembered for his efforts to end apartheid  in South Africa. Mandela was born in 1918. In South Africa, there are both black and white people. But at that time, Black people couldn't live or travel where they wanted. They didn't have the right to vote, either. Mandela didn't think that was right. He organized many activities against it, but he was sent to prison for 27 years. Under international pressure, the government set Mandela free in 1990. Great changes in the law began to end apartheid. At that time, Mandela chose to forgive his enemies. He shook hands with the people who wanted him dead. He also encouraged black people to forgive the whites. Because of his forgiveness, Mandela is remembered as a moral model  by the whole world. In1993,Mandela won the Nobel Peace Prize. A year later, he became the first black president of South Africa. Both black people and white people voted. Apartheid ended. In 1999, Mandela left office at the highest point of his power. Question: Which statement is Right according to the passage? Options: A: The government set Mandela free in 1990. B: Mandela became the black president in 1993. C: Mandela won the Nobel Peace Prize in 1994. D: Mandela left office at the highest point of his power in 1996.
**Answer**


assistant: A