Fishing is a popular activity and every fisherman knows the rule: Keep the big ones, throw the smaller ones back. The idea behind Lt is simple - the larger fish are probably older. If you keep the smaller ones, they won't be able to reproduce, and the fish population is in danger. But fishing out the largest fish from a population has an unwanted effect: Over time, fewer adult fish get really big. If only the smaller fish reproduce , then future generations become smaller. This is an example of evolution in action. One scientist, Dr David Conover has spent the last decade studying the effects of the "keep the big ones" rule and if they can be reversed . To set up his experiment, Conover and his team caught hundreds of silverside fish and divided them into six groups. For two groups, Conover followed the "keep the large ones" rule and took out the biggest fish. For two other groups, he removed only the small fish. For the last two groups, he removed fish at random . After five years, he measured the fish in each group. In the two groups where the largest fish were regularly removed, the average fish size was smaller than the average size in the other groups. Here was evolution in action: If only small fish survive to reproduce, then future generations of fish will also tend to be small. For the second five years of his experiment, Conover changed the rules and took fish randomly from each group. At the end of the experiment, he found that the fish that were in the "keep the large ones" group for the first five years had started to get larger again, although he calculated it would take at least 12 years for the fish in that group to return to their original size. In other words, it takes less time to shrink than it does to recover. What did Conover find after the first five years of his experiment? A) The "keep the big ones" rule made no difference to fish size. B) The "keep the big ones" rule made fish smaller on average. C) The "keep the big ones" rule made the fish bigger on average. D) The "keep the big ones" rule affected all fish populations in the same way.
B
(Question)
Mr. Gao lives in a town. When he was twenty-five, his son was born. He calls him Gao Ling. The little boy is clever. He and his wife love him very much. It's September 1st today. A new school year begins. Gao Ling is happy and wears his most beautiful clothes. He's going to school with his new bag. "Let me take you to school, dear." said Mrs. Gao. "Thank you, Mummy," said the boy. "The school is not far from here.I can go there myself." At school a teacher met the little boy and asked, "What's your name, my little friend?" "Gao Ling, sir." answered the boy. "How old are you?" "Six, sir." "What's your father's name?" "Gao Daling, sir." "How old is he?" "He is six, too, sir." "Oh," the teacher said in surprise. "Is he as old as you?" Yes, sir," said the boy. "He became a father only on the day when I was born." Gao Ling didn't let his mother take him to school because _ . A) she was too busy B) his friends could took him C) the policeman could help him D) the school is near and he could take care of himself
(Answer)
D
Ques: As one of the most well-known of the fantasy languages invented for science fiction film, television and book, and developed by J.R.R. Tolkien himself, Elvish is made up with several thousand words and different sentence structures. Constructed languages like Elvish are real languages, made up of thousands of words created by fantasy writers, linguists and fans, with real language rules. While a widespread vocabulary is advantageous to a constructed language, there is a key differentiator we can see between just a lot of words and real language: Grammar. Grammar is what makes constructed languages like Elvish learnable by everyday superfans. Superfans of The Lord of the Rings have built websites and created dictionaries, apps and translators, to teach Elvish. They have also created online clubs where fans can discuss and even create new words based on the already existing vocabulary, and continue to study the language. So what does it take to be a master of Elvish? In learning Elvish, there are a couple of grammatical rules similar to those of the English language. For example, in order to make a verb past tense in English, you have to add an -ed, making wash, washed. Similarly in Elvish, in order to change the word for wash, which is allu, to the past tense then you have to add an -ne to the word. So washed is then translated to allune in past tense. Nouns in Elvish are different in the way that the noun changes depending on how it's used in a sentence, just like in Latin or Russian. For example, the word head in Elvish is CAS. However, if you duck your head, then the word changes to CARA. When mentioning something in your head, then it changes to CASSE. Tolkien's attention to detail in creating the fantasy world used in The Lord of the Rings and The Hobbit, complete with multiple functioning invented languages, has attracted readers and movie viewers these years. Elvish is only one of the many magical languages developed by J.R.R. Tolkien. Creating language for fantasy has proven to add to viewers and... The best title for this passage might be _ . A) Elvish, a Magical Language B) J.R.R. Tolkien, a Great Writer C) The Hobbit, a Wonderful Film D) Language, a Way to Communicate
Ans: A
Spiders are not insects as many people believe. They belong to a class of animals called arachnids . Spiders have eight eyes, four pairs of legs, and can grow a new leg if they lose one. A spider's body is divided into two sections: the abdomen and the thorax .The legs, eyes, and mouthparts are in the thorax section. Most spiders have poison glands and sharp teeth. They use their sharp teeth to force poison into the insects they catch for food. This poison can make an insect lose the ability to move, and the helpless insect is then _ by the spider. Spiders usually have silk glands under their abdomen. They produce a liquid that is thicker than water from their glands. When the liquid comes into the air, it dries into silk. Many spiders use this silk to form webs to catch insects and to make cocoons that protect their eggs. This amazing silk is also used to create lines that spiders hang onto as they travel to new areas. Spiders live in almost everywhere on earth. The only places where there are no spiders are the coldest places, the highest mountains and the seas. According to the passage, which of the following is WRONG? A) Spiders are not insects. B) All spiders have poison glands. C) Spiders make cocoons to keep their eggs safe. D) There are no spiders in the coldest places.
B