Read the following article and select the best answer. Article: Robert A.Heinlein was considered one of American's "Big Three"western science fiction authors,along with Issac Asimov and Arthur C.Clarke.He was born in a family of seven children in 1907,attended public school in Kansas City,and graduated from Central High School in 1924.In 1929 he graduated from fhe U.S.Naval Academy at Annapolis,and served as all officer in the Navy.This experience had a strong influence on his character and writing.At the age of thirty-two,he turned his hand to writing science fiction. Heinlein's first published stories appeared in the action-adventure magazine Astounding Science Fiction in 1939.Under his influence writers started to examine how technology might affect the everyday lives of ordinary people,and society in general. Heinleiu's early works emphasized adventure,and were aimed at young readers.In 1959 he received the Boy's Clubs of American Book Award.In these novels Heintein avoided open didacticism ,although his main characters learned lessons in courage and tolerance.Beginning in the late 1950s,Heinlein started to write specially for adults,and to deal with such topics as cloning,religion,and free love. Heinlein produced fifty novels and collections of short stories during his career.One of his best-known works is the novel Stranger in a Strange Land,published inl961.A few years later it was adopted by the"Peace and Love"generation,and became the most successful science-fiction novel ever published.Glory Road(1963),written in the tradition of Edgar Rice Burroughs's Mars stories,is another of his most popular works. Within the framework of his science fiction stories,Heinlein repeatedly addressed such social themes as the importance of self-confidence and the duties each person owes to the society.In his fiction,Heinlein coined words that have become part of the English language, including"grok"and"waldo".He also described a modern version of a "waterbed"in his novel The Door Into Summer and several of his works have been adapted... Question: Which of the following is true about Heinlein's works? - They were Never aimed at adults. - They forced readers to accept moral ideas. - They were greatly influenced by other writers. - Early works were popular among young readers.
Early works were popular among young readers.

(Question)
Read the following article and select the best answer. Article: Of the thousands of different kinds of animals that exist in the world man has learned to make friends with an enormous number. Some are pets, and offer him companionship; some give protection, and some do hard work which man cannot do for himself. Dogs, which serve man in all three capacities, are found in various species in all countries of the world. The Husky can live in the cold polar regions, and the Saluki is at home in the hottest parts of Central Africa. The inhabitants of certain countries are dependent for their very lives on the camel. In the West Indies the little donkey, strong and sure-footed, carrying heavy loads even in mountainous places, is a familiar sight. Trained and tamed for many generations, domestic animals are not accustomed to roaming in search of food and shelter. They look to their masters to provide for their needs, and as long as these are supplied, they are content to do what their masters require. All domestic animals need proper food. It must be suitable for them, sufficient in quantity, fresh and clean. Some people feed a pet dog or cat on odds and ends of table scraps , and then wonder why the animal seems tired and dull. The quantity of food depends on the size of the animal and the amount of exercise it takes. Overfeeding is as bad as underfeeding. Containers for food and water must be washed regularly if the animal is to maintain good health. Even well cared for animals may sometimes fall ill. If this happens, the wise master seeks the best advice he can get. All sorts of medicines and treatments are available for sick animals, and in some countries organizations exist to provide them free or at a cheap price. Useful, friendly, hardworking animals deserve to have some time, money and attention spent on their health. Question: To keep a domestic animal physically fit, its owner is advised _ . - not to hesitate to spend enormous amount of money on it - to pay attention to its proper feeding - not to allow it to take excessive amounts of exercise - to join some sort of pet-keeping organizations
(Answer)
to pay attention to its proper feeding

Ques:Read the following article and select the best answer. Article: When the Farnsworth family moved to their new farm in 1919, eleven-year-old Philo was surprised to find it wired for electricity. This unusual circumstance contributed to his fate -- to become an important inventor of the twentieth century. By thirteen, Farnsworth had become a self-taught electrical engineer. He was able to fix the farm's generator when none of the adults could. In 1922, he read an article about a new idea of John Baird, a Scottish scientist, who had been working with the cathode ray tube for the transmission of electronic pictures and wanted to attempt it himself. Farnsworth studied everything he could find on the subject. Although many older engineers with money backers were already developing television, Farnsworth made a bold decision -- he was going to perfect a working model of it before anybody else. In college, Farnsworth continued his research with cathode ray and vacuum tubes, but the death of his father, the only money maker in the family, forced him to give up this research and find a job. His first job was for George Everson, with whom Farnsworth discussed his dream of television. While acknowledging the achievements of those who came before, Farnsworth thought that he could get closer. Everson agreed to risk $6,000 for the research. Backers came in 1927 to see the first American television, one year after Baird's. They were astonished to see the image of a single white line resolve itself on the screen before them, and agreed that this new invention was worth putting money into. In 1930, Farnsworth won a patent for his all-electronic TV. By the time he died, he had earned over 300 American and foreign patents for electronic and mechanical devices. Question: From the passage, we can learn that Farnsworth is _ . - the first person who worked for the transmission of electronic pictures - an inventor who improved on somebody else's idea - an inventor who always came up with an original idea - a person who earned over 300 American patents for electronic devices

Ans:
an inventor who improved on somebody else's idea