Problem: OPTIONS:
- sunlight and water
- glucose and energy
- water and CO2
- sunlight and CO2
Q: Read the following article and answer the question. 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: The leaves turn yellow because they are short of _ . Answer:
Answer: sunlight and water

Problem:OPTIONS:
- hehad lost his job and wanted to find a new one.
- he had to support his family in Boston.
- his wife had recently died of a heart attack.
- his daughter needed money for schooling.

Read the following article and answer the question. Article: I was being interviewed by a senior manager for a major insurance company. I told him honestly why I wanted the job----I needed to keep my family in Boston. My wife recently died of a heart attack. A job in Boston would help me reduce some of the extreme trauma and pain of the loss for my 16-year-old daughter. It was important for me to keep her in her high school. I could still hardly talk about the loss of my wife. Bruce, the interviewer, was politely empathetic, but he didn't probe any further. He admitted my loss and with great respect, moved on to another subject. After the next round of the interview, Bruce took me to lunch with another person. Then he asked me to take a walk with him. He told me that he, too, had lost his wife. And, like me, he had also been married 20 years and had three children. In his sharing, I realized that he had experienced the same pain as I had -----a pain that was almost impossible to explain to someone who had not lost a beloved one. He offered his business card and home phone number and suggested that, if I need help or just want someone to talk to, I should feel free to give him a call. Whether I got the job or not, he wanted me to know that he was there if I ever needed help. When he had no idea if we would ever see each other again, he helped our family deal with one of the greatest losses. He turned the normally cold business interview into a caring support for another person in need. Question: The writer took part in the interview because _ . Answer:
****
A: he had to support his family in Boston.

Read the following article and answer the question. Article: Snowflakes! You can catch them on your tongue or use them to make a perfect snowball. But have you ever thought about taking pictures of them? Ken Libbrecht did. He is a physics professor from California. Although the weather in California is usually warm and sunny, Ken's hobby is taking pictures of snowflakes. He travels to cold areas like Alaska and Canada to find snowstorms and take pictures of the snowflakes. "They are often beautiful, and every snowfall brings new surprises," says Ken. Ken takes pictures of snowflakes with a high-quality digital camera. He uses a microscope to make the tiny snowflakes larger. To get the best images, Ken built a special photo-microscope just for snowflakes. He collects flakes by letting them fall onto a piece of foam board . The pictures must be taken outdoors, so Ken wears lots of clothes to stay warm. But his fingers often get cold, because it's difficult for him to take pictures of a tiny snowflake with gloves. Each snowflake has shapes and patterns that make it as unique as a person's fingerprint. The hobby of snowflake photography is also unique. Next time a snowstorm blows through your town, take a closer look at the flakes before you gather them into a snowball. See if you can notice their unique patterns. Millions of snowflakes are waiting for you! ,. Question: Which of the following isn't used when Ken works with snowflakes? Answer:
OPTIONS:
- A snowball.
- A digital camera.
- A microscope.
- A piece of foam board.
A snowball.

Read the following article and answer the question. Article: Lion is a special animal to Chinese people. A couple of stone lions, a male and a female , can often be seen in front of the gates of old buildings. The male lion is on the left with his right paw on a ball, and the female on the right. And her left paw is touching a baby animal. The lion is the king in the animal world because he is powerful. The ball shows the country or the family will be together forever, and the baby animal with the female shows that you will have many children. The stone lions were also used to show the families were powerful. If you had no money or power, you couldn't put the stone lions in front of your houses. It was also popular to make bridges with stone lions. The best known of this is the Lugou Bridge (also as Marco Polo Bridge), built from 1189 to 1192. The stone lions on the bridge are most famous. Maybe there are 485 lions in all, maybe there are 498 or 501. A famous saying is that "the lions on the Lugou Bridge are uncountable ." Question: Which is NOT right below about the stone lions in front of the gates of the old houses? Answer:
OPTIONS:
- The male lion is on the left with his right paw on a ball.
- The female is on the right with her left paw touching a baby animal.
- The common people couldn't put a pair of stone lions in front of the gates of old buildings.
- If someone puts a pair of stone lions in front of the gate, he must have a lot of babies.

Answer: If someone puts a pair of stone lions in front of the gate, he must have a lot of babies.

input: OPTIONS:
- three
- four
- five
- two Now, answer this question: Read the following article and answer the question. Article: President Obama is very busy, but he has time to go to the school to visit students. He tells them about his life. He says that he learns a lot from his mother. He also asks students to study hard at school. To help students to be better, President Obama has some good ideas for them. First, go to school on time every day. Second, listen to teachers carefully in class. Third, do their homework every day. Fourth, don't watch too much TV. Please do as President Obama says and you will be successful one day. Question: There are _ ideas here from President Obama ? Answer:
A:
output:
four