Please answer this: Write a multi-choice question for the following article, with the given choices and answer: Article: Agricultural experts met in Ethiopia last week to discuss ways to help sub-Saharan Africa become a major producer of wheat. The area traditionally produced little wheat, while North Africa was the grain basket. Wheat production fell sharply in sub-Saharan countries during the 1980s. In the 1960s, attempts were made to grow wheat in sub-Saharan Africa, including South Africa and Zimbabwe. But those countries found it was less costly to import wheat from Europe and the United States. Another problem is that Africa's wheat farms were often far from population centers. There also were transportation issues. And some lowlands were not a good place to grow wheat. Hans Joachim Braun,one of the experts, says now is a good time to increase wheat production. In the last four years we have seen three major price hikes, where the wheat price and other staple process exploded. And that puts a big, big bill on countries which are depending on wheat imports, and Africa is the biggest wheat importer. He also says demand for wheat in sub-Saharan Africa is growing faster than for any other crop. With higher income people would like to have more diversified food. But that is possible not the most important one. The most important one is that there is a tremendous migration of in particular male labor to the cities. And wheat products are convenient food because you can easily buy it. It's easy to process and you also can store it for a few days, which is different from some of the maize and rice products. There are three possible challenges for growing more wheat in Africa: climate change, disease and pests, like insects. Mr. Braun says rising temperatures should not have a major effect on wheat. In fact, he says, it could help wheat grow in areas with high rainfall totals. As for fighting disease and pests, experts suggest growing more resistant crops. In addition, railroads and roads would have to be improved so large amounts of wheat could be moved to large markets. Options: A Because the number ofhungry people there is increasing. B Because higher income people have the diversified need of food. C Because male labor are crowding into the cities. D Because the wheat price is lower. Answer: C Because male labor are crowding into the cities. Question:
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Answer: Why is there a higher demand for wheat in sub-Saharan Africa?

Problem: Write a multi-choice question for the following article, with the given choices and answer: Article: Habits,whether good or bad,are gradually formed when a person does a certain thing again.He is driven by some unseen force to do the same thing repeatedly, and then a habit is formed.Once a habit is formed,it is difficult,and sometimes impossible,to get rid of.It is therefore very important that we should pay great attention to the formation of habits.Children often form bad habits, some of which remain with them as long as they live older. Persons also form bad habits lasting as long as they live,and sometimes become ruined by them. There are other habits which,when formed in early life,are of great help.Many successful men say that much of their success has something to do with certain habits in early life,such as early rising,honesty and so on. Among the habits which children should not form are laziness,lying,stealing and so on.These habits are all easily formed.Unfortunately older persons often form habits which could have been avoided. We should keep away from all these bad habits,and try to form such habits as will be good for ourselves and others. Options: A to form bad habits;to form good habits B to form good habits;to form bad habits C to form such habits as wilI be good;to get rid of bad habits D to get rid of bad habits;to form good habits Answer: B to form good habits;to form bad habits Question:

A: Generally speaking, it's difficult for one _ and easy for them _ which should be avoided.

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Boys and girls,as we all know,most people,especially young people ,tend to care about their hair much because hair plays a very important role in our appearance.But can you imagine what other uses hair has?Do you have any idea that human hair may become a new solar energy soutce?Before we begin with the new content of our Physics ,let me tell you a new invention first. It's reported that a Nepali teenager has designed a $32 solar panel using human hair. Milan Karki,who is 18 years old and lives in a village in rural Nepal,used human hair to replace silicon ,which is a common but expensive componet of solar panels. By using hair as a replacement,Karki says that solar panels can be produced for around $32,a price that could be halved if they were mass-produced. The solar panel works,because melanin ,which gives hair its colour,is light sensitive and can act as an elecrtical conductor.Kaiki was inspired to think of the idea by a Stephen Hawking book ,which explained how to create elecrtic energy from hair. The device that Karki has invented is capable of producing 9V or 18V of energy--plenty to charge a mobile phone. "Half a kilo of hair can be bought for only 16p in Nepal and lasts a few months;whereas a pack of batteries would cost50p and lasts few nights,"according to The Daily Mail. The solar panel is claimed to be easy to service as the hair is easy to replace. Karki has now seng out several devices to other disrticts near his home for tetimg .He said,"First I wanted to provide elecricity for my home,then my village .Now I am thinking for the whole worle." So next time when you have a haircut,do remember to keep your hair cut down to use for energy.Perhaps you can also provide elecrticity for your home,even your village using your own hair. Options: A It is a common but expensive component of solar panels. B It can create electric energy. C It can produce energy plenty to charge a mobile phone. D It is cheap and easy to replace. Answer: D It is cheap and easy to replace. Question:
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The answer is:
What's the advantage of using hair as a new solar energy source?

Q: Write a multi-choice question for the following article, with the given choices and answer: Article: When you think of photographing people, you may think of your family reunion or the Christmas party at work. These types of pictures of people are records of fun events with nice memories. Let's take a look at another idea for taking pictures of people, with an entirely different slant. Much as anthropologists study the diversity of characteristics of people in cultural and environmental contexts, some photographers record these aspects of people in their pictures. They try to capture the emotions and humanity of people, and the photograph draws the viewer into the subject's experience at that moment in time. Taking pictures of people with this goal in mind makes the photographer and the viewer grow in the understanding of human nature. For example, a photograph of a young man trying to hitch a ride in the rain can show the experience. His poncho sparkles with the raindrops flowing in a steady stream to the ground. The lights of passing traffic highlight the contrast between the warm, dry drivers, taking no notice of his misery. Another picture of a child sleeping on a bench at a busy train station can capture the innocence of childhood contrasted with a busy world of hurried grown-ups. If you'd like to experiment with this form of photographs of people, look for ordinary people in contrasting environments or contexts. Children and the elderly pose extraordinary possibilities. The lined faces of the aged often make great subjects, reflecting character and wisdom. People are such interesting subjects. Facial expressions can convey a thousand moods and feelings. Taking pictures of people with an eye to the feel and magic of the moment will make you a better and more enthusiastic photographer. You may find yourself so taken with this new experience. Photographing people is an artful endeavor. Take the leap! Options: A common people B important people C strange people D poor people Answer: A common people Question:
A:
It is suggested in this passage that you photograph _ .