Question: I'm taking a test and have to guess the right answer to the question after the article. Article: ScienceDaily (July 5, 2009) -- Researchers from the University of Haifa-Oranim have managed to make out the "self-irrigating" mechanism of the desert rhubarb , which enables it to harvest 16 times the amount of water collected by other plants in the Negev Desert. This is the first example of a self-irrigating plant worldwide. The desert rhubarb grows in the mountains of Israel's Negev desert, where average rainfall is particularly low (75 mm per year). Unlike most of the other desert plant species, which have small leaves so as to reduce water loss, this plant is unique in that its leaves are particularly large; each plant's rosette of one to four leaves reaches a total diameter of up to one meter. Prof. Simcha Lev-Yadun, Prof. Gidi Ne'eman and Prof. Gadi Katzir came across this unique plant while studying the field area with students of the Department of Science Education-Biology of the University of Haifa-Oranim, and noticed that its waxy leaves are unusually large. They observed an exceptionally ridged structure on each leaf. The scientists explained that these deep and wide depressions in the leaves create a "channeling" mountain-like system by which the rain water is channeled toward the ground surrounding the plant's deep root. Other desert plants simply absorb the rain water that goes through the ground in its immediate surroundings. The desert rhubarb is able to harvest quantities of water that are 16 times the amount of water harvested by the small-leafed plants of the Negev desert region. When the research team watered the plant artificially, they observed how the water flows along the course of the leave's depressions to the ground surrounding the plant's single root and then goes through the ground to a depth of 10 cm or more. Under the experimental conditions, water goes through the ground only as deep as 1 cm. "We know of no other plant in the deserts of the world that functions in this manner," the researchers concluded. Question: Which of the following helps other desert plants adapt to the dry climate? Options: A: Thin roots. B: Small leaves. C: Deep depressions. D: The ridged structure.
Answer: B

Question: I'm taking a test and have to guess the right answer to the question after the article. Article: Children in the United States are exposed to many influences other than that of their families.Television is the most significant of these influences,because the habit of watching television usually begins before children start attending school. Parents are concerned about the lack of quality in television programs for children.The degree of violence in many of these shows also worries them.Studies indicate that,when children are exposed to violence,they many become aggressive or insecure. Parents are also concerned at,out the commercials that their children see on television. Many parents would like to see fewer commercials during programs for children.And some parents feel that these shows should not have any commercials at all because young minds are not mature enough to deal with the claims made by advertisers. Educational television has no commercials and has programs for children that many parents approve of The most famous of these is Sesame Street,which tries to give preschool children a head start in learning the alphabet and numbers.It also flies to teach children useful things about the world in which they live. Even though most parents and educators give Sesame Street and shows like it high marks for quality,some critics argue that all television,whether educational or not,is harmful to children.These critics feel that the habit of watching hours of television every day turns children into bored and passive consumers of their world rather than encouraging them to become active explorers of it. Question: Parents would not like their children to see commercials because _ Options: A: they think that their children ore not old enough to handle advertising B: commercials teach children alphabet and numbers C: commercials help to sell products D: they don't like commercials
Answer: A

Question: I'm taking a test and have to guess the right answer to the question after the article. Article: A long time ago, before there was any money (coins or paper money), people got the things that they needed by trading or exchanging. Salt was one of the first items used to exchange for other items. Later, some of the common things that were used for exchanging were tea leaves, shells, feathers, animal teeth, tobacco, and blankets. Around 3000 BC, barley, a type of grain, was used for exchanging. The world's first metal money was developed by the Sumerians who melted silver into small bars all weighing the same. This was around 1000 BC. About three hundred years later, people started using coins as official money. Around 640 BC, people in the ancient kingdom of Lydia ( which was in Turkey) created special coins of exact with and purity . They were made of gold and silver and were stamped with a lion's head. Later, other empires such as Greece, Persia, and Rome _ the concept of coins and started developing their own in many different shapes and different metals. Around the year 1000, the Chinese started using paper money. The Chinese were the first to use paper money. The Europeans discovered this thanks to Marco Polo who went to China in 1295. the Chinese had different values for the paper notes which were made by the Chinese government. Around 1661, Sweden became the first European country to make paper money. Until 1850, the Spanish dollar was the coin most widely used throughout the world. Question: Which of the following countries first started to use paper money? Options: A: Spain B: China C: Sweden D: Lydia
Answer:
B