Question: (Q).
Read the following article and select the best answer. Article: Six volunteers are about to find out what it would be like to live on Mars without ever leaving the Earth. Three men and three women will spend eight months living in a special place on the side of a volcano in Hawaii. They are part of an experiment that is designed to mimic life on Mars. Their mission began on October 15, 2014. NASA says it could send astronauts to Mars as early as the 2030s. The mission would take more than two years, so NASA needs to know how people would react to living in a small group, isolated from the rest of the world, for such a long time. Some people may become depressed or bored living under those conditions. By studying people living in similar conditions here on Eares NASA hopes to learn how to choose the most suitable people for a space mission, and how to help them get along. They will live in a two-story building. The ground floor is about 86 square meters, roughly the size of a small two-bedroom apartment. It includes shared areas like kitchen, dining room, bathroom, laboratory and an exercise room. The upstairs is less than half the size of the downstairs. It contains another bathroom and six small bedrooms. The building is located in an abandoned quarry about 2,400 meters up the side of Mauna Loa, the second biggest volcano in the world. It is constantly monitored for signs of volcanic activity. NASA chose the location because the appearance looks very similar to Mars. To make it more like being on Mars in the future, they are only able to communicate by email during the experiment. Meanwhile, there will be a 20-minute delay between the time when a message is sent and that when it is received. When they go outside, they will have to suit up in full spacesuits, just as if they were on Mars. The commander is Martha Lenio, a 34-year-old Canadian. During the mission, she will run experiments on growing food. The other members have backgrounds in physics and so on. None of them are astronauts. Question: What can be inferred from the passage? - Martha is a famous expert on agriculture. - The six volunteers will be sent to Mars in 2030. - All the experimental activities are done in doors. - It takes about 40 minutes to get a reply to an email.
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It takes about 40 minutes to get a reply to an email.


(Q).
Read the following article and select the best answer. Article: Pigs are always considered dirty animals because they roll in mud.But in fact they prefer  being quite clean.They cover themselves with mud to help stay cool.During cooler weather,  they prefer to stay clean.So do elephants,who also cover themselves in dust or mud to keep cool. When they find a place with clean water they will take a bath,using their long noses to give  themselves--or each other--a nice shower Some animals use dust to get clean.Chinchillas   have very fine fur. They don`t like to take water baths because water is not warm enough for them.So, instead, they roll  around in fine dust.The dust helps to keep their fur and skin dry.This protects them from disease Usually, a small bird is a light meal for a crocodile.But when a crocodile wants its teeth  cleaned.it lies on the ground with its mouth open.The crocodile bird goes in and picks out any  parasites between the crocodile`s teeth or under its tongue.The crocodile gets its mouth cleaned,and the crocodile bird gets dinner. You wouldn`t think fish would need baths.But some undersea parasites live under the  fish`s skin."Cleaner"fish,like the wrasse ,help take them away.The wrasse stands on its head and dances to signal a big fish that it is ready to go into the cleaning business.The big fish will stop moving and open its mouth wide so the wrasse can swim inside and pick out  parasites and bits of food. Question: The passage is mainly about how animals_. - stay clean - help each other - get their food - Take baths
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stay clean


(Q).
Read the following article and select the best answer. Article: Dogs are social animals and without proper training, they will behave like wild animals. They will soil your house, destroy your belongings, bark excessively, fight other dogs and even bite you. Nearly all behavior problems are perfectly normal dog activities that occur at the wrong time or place or are directed at the wrong thing. The key to preventing or treating behavior problems is learning to teach the dog to redirect its normal behavior to an outlet that is acceptable in the domestic   setting. One of the best things you can do for your dog and yourself is to train its obedience. Obedience training doesn't solve all behavior problems, but it is the foundation for solving just about any problem. Training pens up a line of communication between you and your dog. Effective communication is necessary to instruct your dog about what you want it to do. Training is also an easy way to establish the social rank order. When your dog obeys a simple request of "come here, sit," it is showing obedience and respect for you. It is not necessary to establish yourself as top dog or leader of the pack   by using extreme measure. You can teach your dog its subordinate   role by teaching it to show submission to you. Most dogs love performing tricks for you to pleasantly accept that you are in charge. Training should be fun and rewarding for you and your dog. It can enrich your relationship and make living together more enjoyable. A well-trained dog is more confident and can more safely be allowed a greater amount of freedom than an untrained animal. Question: Behavior problems of dogs are believed to   _  . - occur when they go wild - be just part of their nature - get worse in modern society - become a threat to the community
(A).

Answer: be just part of their nature