Read the article and select the best answer. Article: Deserts are found where there is little rainfall or where rain for a whole year falls in only a few weeks' time. Ten inches of rain may be enough for many plants to survive if the rain is spread throughout the year. If it falls within one or two months and the rest of the year is dry, those plants may die and a desert may form. Sand begins as tiny pieces of rock that get smaller and smaller as wind and weather wear them down. Sand dunes are formed as winds move the sand across the desert. Bit by bit, the dunes grow over the years, always moving with the winds and changing the shape. Most of them are only a few feet tall, but they can grow to be several hundred feet high. There is, however, much more to a desert than sand. In the deserts of the southwestern United States, cliffs and deep valleys were formed from thick mud that once lay beneath a sea more than millions of years ago. Over the centuries, the water dried up. Wind, sand, rain, heat and cold all wore away at the remaining rocks. The faces of the desert mountains are always changing--very, very slowly--as these forces of nature continue to work on the rock. Most deserts have a surprising variety of life. There are plants, animals and insects that have adapted to life in the desert. During the heat of the day, a visitor may see very few signs of living things, but as the air begins to cool in the evening, the desert comes to life. As the sun begins to rise again in the sky, the desert once again becomes quiet and lonely. Question: Sand dunes are formed when _ . Options: A: there is plenty of rain in a year B: sand piles up gradually C: the sea has dried up over the years D: pieces of rock get smaller
B

(Question)
Read the article and select the best answer. Article: There was great interest when a big hole mysteriously appeared in the middle of a field. Engineers were called in to explain how it had got there. They offered various explanations but were not at all sure how the hole had been caused, it was thought that a large bomb which came suddenly exploded, but it was not possible to prove this. A simple, but highly improbable explanation was offered by a man who declares to know well about "flying saucers"; the strange objects which are round in shape and are said to visit the earth from outer space. The man's explanation may have been nonsense , but at least it was imaginative. At any rate, it was far more interesting than the one given by the army. After examining the ground carefully the man declared to have seen special marks on the soil quite near the hole, these, he said, could only have been caused by a flying saucer. Moreover the leaves on some bushes nearby had turned yellow because of a strange hot gas which had come from the saucer just before it landed. Even a small tree some way off appeared to have been burnt slightly. A small piece of metal found in the hole itself gave further proof that a strange object had been there. According to the man, it was quite clear that people from another world had been going around the earth trying to pick up information, when something had gone wrong. Because of this they had been forced to land in a field so that the damage could be repaired. The hole had been caused when the saucer struck the earth, while the strange marks nearby were made when it took off again. This, said the man, was the simplest explanation of how the hole had appeared. Judging from the interest the public took in the matter, there must be quite a few people who secretly believe or hope that this simple explanation is the true one. Question: It's said the outer-space people were circling the earth _ . Options: A: to repair their saucer B: to strike the earth C: to. collect information D: to make strange marks
(Answer)
C

Ques:Read the article and select the best answer. Article: The artist Grandma Moses became famous for her simple, bright, cheerful paintings of American farm life.Her full name was Anna Mary Robertson Moses.But she was known to everyone as Grandma Moses because she did not begin to paint seriously until in her seventies. Born on a farm in New York, Anna had little schooling.Her days were filled with farm chores.But she often found time to make pictures.Soon, however, she became too busy to draw or paint.At the age of 12, she went to work as a servant for a family nearby.She worked for other people for many years.Then, when she was 27, she married Thomas Moses, a farmer.And they began raising a family of their own. Anna Moses could no longer do heavy farm work with age.Then, in her seventies, she began to paint in oils.Her pictures showed things she recalled from childhood-farm scenes, ice-skating, bringing home the Christmas tree.Later, she began to display her art at county fairs.Her pictures recorded a way of life that was quickly passing away.People everywhere loved these happy scenes, and soon her paintings were shown in art galleries.Grandma Moses became famous partially on account of her age, but mainly because her approach to art was modest and simple compared to many other painters of her time.Without formal training or even knowledge of Modernism, she relied on her own simple techniques to create her landscapes and scenes.She continued to paint almost until her death, on December 13, 1961 , at the age of 101. The themes in her paintings provided the comfort of a rural life that many busy Americans treasured from their past.The threat of nuclear arms that appeared on television screens and in magazines had Americans starving for something more.Grandma Moses' art appealed to those who had lost hope for the future.Her classic paintings still appear on TV commercials, greeting cards, and magazine and book covers. Question: The key reason for her success is _ . Options: A: her old age B: her plain style C: her lack of training D: her modern knowledge

Ans:
B