Read the following article and select the best answer. Article: The World Health Organization (WHO) planned to study the relationship between the eating habits of the people and the disease. Two doctors were chosen to make the study. They flew to Africa south of the Sahara and during the next two months visited ten countries. They found that serious diseases of poor eating, often mistaken for other diseases, existed in all parts of Africa. The diseases were similar and could therefore all be named kwashiorkor. The diseased children are usually from one to four years old. As the illness progresses, the child's stomach becomes swollen by liquid collecting in the body. The skin changes color and may break out in open sores . The hair changes color and starts to fall out. The patient loses all interest in his surroundings and even in food, and becomes so weak that he wants to lie down all the time. Stomach liquids are no longer produced. The doctors reasoned that kwashiorkor was found in the young children of this age in many parts of Africa because of lack of milk or meat. Their mothers, after stopping their breastfeeding, gave them foods full of starches instead of greatly needed proteins. They found that the addition of milk to the food of the children suffering from kwashiorkor saved many lives. The unbelievable thing about kwashiorkor is that the very existence of the disease--which has been killing thousands of children for centuries--was not even recognized in Latin America as recently as ten years ago. The deaths of those children were mistakenly listed as due to other diseases. It was the WHO's work in Africa that led to the discovery of the problem in Central America. Question: It is difficult to discover kwashiorkor because _ . - it has no symptoms at all - it is hard to identify signs of it - it doesn't last long enough for careful observation - it is hardly different from other diseases
it is hardly different from other diseases

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Read the following article and select the best answer. Article: Any mistake, which is made in the printing of a stamp, raises its value to stamp collectors. A mistake on a two-penny stamp has made it worth a million and a half times its face value. Do you think it possible? However, it is true. The mistake was made more than 100 years ago in Mauritius, a small island in the Indian Ocean, which was a British colony at that time. In 1847, an order for stamps was sent to London. Thus prefix = st1 /Mauritiusbecame the fourth country in the world which had the stamps made in other countries. Before the order was filled ,that is, the stamps arrived from England, a big dance party was planned by the commander-in-chief of all the armed forces on the island. The party would be held in his house and letters of invitation would be sent to all the important people in Mauritius. So stamps were badly needed to post the letters. Therefore, an islander, who was a good printer, was told to copy the pattern of the stamps. He carelessly put the words "Post Office" instead of "Post Paid", two words seen on the stamps at that time, on several hundred that he printed. Today, there are only 26 of these misprinted stamps left: fourteen One-penny Reds and twelve Two-penny Blues. Because of so few Two-penny Blues and because of their age, collectors have paid as much as $16,800 for each of them. Question: Which of the following can be a title for the passage? - How can a Stamp Be Worth $16,800? - Printer Made a Mistake. - Stamp-collection Calls for Much Money. - A Dance Party Planned.
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How can a Stamp Be Worth $16,800?

Read the following article and select the best answer. Article: Though there are about 400 languages from all over the world that are in danger of disappearing completely, Zoque-Ayapaneco, a native Mexican language is considered the most likely to become extinct, because the only two people in the world that speak it fluently do not talk to each other! And, it's not because they live in different countries, states or even villages. In fact, Manuel Segovia and Isidro Velazquez, both in their 70s, live within 500 yards of each other, in the village of Ayapa in the Southern Mexican State of Tabasco. They, however, refuse to communicate because they simply don't have much in common. Segovia is apparently a little flank in nature while Velazquez is described as shy. Segovia was at least able to talk in Zoque-Ayapanece with his brother until he passed away about 12 years ago, and still manages to practice it with his family, especially his son Manuel, who for the last five years has been trying to learn it and hopes to become fluent enough to teach it to the next generation. Velazquez on the other hand, has not been heard speaking in the language with anybody. The two men say the language used to be widely spoken in the village, but the younger generation _ it for fear of being laughed at, and it therefore began to die a slow death, as the elders passed away. Unless the two men get their acts together, the only way to hear the language will be to either listen to Manuel's not-so-fluent statement or see them talk in a documentary entitled "Lengua Muerta" (Dead Language) that is being filmed to capture Zoque Ayapaneco and 364 other native Mexican languages that are in a similar state. We sure hope Segovia and Velazquez soon find something common to talk about. Maybe the fact is that the language is dying and that they should start encouraging and teaching the next generation together. Question: The reason why Segovia and Velazquez don't talk to each other is that _ . - they both are too shy - they live in different villages - they are too familiar to talk - they have no similarity in their character
they have no similarity in their character