Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Are you carrying too much on your back at school? I'm sure lots of children of your age will say "Yes". Not only the students in China have this problem, but children in the United States also have heavy school bags. Doctors are starting to worry about young students' back and neck because their school bags are too heavy for them. "It's hard for me to go upstairs with my heavy bag," said Rick Hammond, an ll-year-old student in the USA. Rick is among students who have school bags with two straps ,and many other students choose rolling bags. But even with rolling bags ,getting upstairs is still a problem for children .Doctors say students should carry no more than 10% to 15% of their own body weight . Scott Bautch, a back doctor, said children under Grade 4 should carry no more than 10% of their weight and older children shouldn't stay with over 15% , because their bodies are still growing. Teachers and parents should do some things to help children. And the best answer is to have less homework! Options: A 5 kilos B 3 kilos C 5.5 kilos D 4.5 kilos Answer: D 4.5 kilos Question:
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The answer is:
According to the doctor, Scott Bautch, if a child in Grade 5 weighs about 30 kilos, the school bag he carries should not be over _ .

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Memory is essential for life. We have a short-term memory and a long-term memory. When we get old, our short-term memory becomes weaker, but we can still remember things that happened a long time ago. There are many things we can do to improve our memory, such as using various memorizing methods as well as taking special care of our health. It is important that we regularly stimulate our brain to make our memory more efficient . For example, we can do activities that we do not usually do and change our daily habits. Learning a new skill helps our brain develop. When trying to memorize something, we should focus our attention on the most important things about it. Do not allow other thoughts to enter our mind because this will lower our chances of remembering things correctly. One basic way of improving our memory is to use the link method. If we want to memorize something, we should make a picture in our mind. If the picture is silly, strange and colourful, we will remember it better. Taking notes, being organized and keeping a diary will also be useful tools. Sometimes, memory is connected with our feelings. When something dramatic happens, we usually remember it well, and we also remember where we were and what we were doing. Healthy food and plenty of vitamins are important to our memory. Drinking a lot of water also helps maintain our memory. When we are asleep, our brain stores memory. Not enough sleep can, therefore, cause problems with storing information. In addition, being tired will stop us from being able to remember well. As a result, keeping fit and having regular health checks are both important as well. Options: A The short-term memory becomes stronger. B The short-term memory becomes weaker. C The long-term memory becomes stronger. D The long-term memory becomes weaker. Answer: B The short-term memory becomes weaker. Question:
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The answer is:
How does people's memory change when they get older?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: It's very early in the morning and I'm sitting outside. It's also very cold and dark. With me is Jim Nightingale, and he is the reason I'm up so early. He passes me a hot cup of coffee. "Not long to wait now," he says. I hope he's right. After a few minutes there is a very weak light in the east, and then I hear a bird singing. It sings very loud and very clear. "That's the robin ," says Jim. A few more birds start singing with the robin and Jim knows the names of them too. Half an hour later, there are more and more birds singing, and it's very loud! Suddenly, all around us the air is full of the sound of birdsong. This is the dawn chorus , and it's beautiful. "Wow, this is amazing!" I tell Jim, who is smiling. "Is there a dawn chorus every morning?" "Birds can sing any time of the year but the best time is the end of winter and during the spring. This is when the birds sing most." "Really? So, why do they sing?" I ask. "Well, there are two reasons," explains Jim. "Most of the songbirds who sing are males. They want to find a female so they sing to show how strong they are. The females listen and choose the best singer! The birds also sing to tell other males to go away. They need their own area; they don't like sharing with another male." I listen to the birds; the songs seem too much to me. "Do the birds sing a special song in the morning?" "That's a good question," replied Jim. "The successful birds have many kinds of calls and songs. Sometimes they copy the songs of other birds. This makes it sound like there are many birds in that place already and other males stay away. Also the female likes songs with different notes. Some birds, for example the European wren, have songs that contain over 700 different notes per minute!" So, how does Jim know so much about birds? Well, he works as a volunteer for the Royal Society for the Protection of Birds. He is trying to help the birds live in the modern world. "More and more of the birds' habitat disappears every year. The sparrow, for example, was a very common... Options: A At first the writer is happy to be up so early in the morning. B Male birds have their own ways of fooling other birds. C It's easier for the birds to find food early in the morning. D Jim has a job with the Royal Society for the Proteciton of Birds. Answer: B Male birds have their own ways of fooling other birds. Question:
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The answer is:
According to the text, which of the following statements is true?