Read the article and select the best answer. Article: Next Stop: Planet Mars Fly me to the moon? That's not far enough. On September 14, 2011, NASA released designs for a superrocket, the Space Launch System (SLS). This time the final destination will be Mars. The SLS is a huge, liquid-fuelled rocket. If it is fully developed, it will be the most powerful rocket ever built. Its lift capability will be much bigger than that of the space shuttle of Saturn 5, the rocket that sent the Apollo missions to the moon. NASA is planning to launch its first unmanned test flight in 2017. It is hoped that the first crew will fly in 2021 and astronauts will make it to a nearby asteroid in 2025. NASA hopes to send the rocket and astronauts to Mars from the asteroid by the 2030s, according to the Associated Press (AP). NASA used liquid rockets to send Apollo, Gemini and Mercury into space, but later changed to solid rockets boosters because they were cheaper. Tragically, however, a booster flaw caused the space shuttle Challenger to crash in 1986. The new project plans to return to liquid fuel. According to AP, the rockets will at first be able to carry 77 to 110 tons of payload . Eventually they will be able to carry 143 tons into space, maybe even as many as 165 tons, NASA officials said. By comparison, the Saturn 5 booster could lift 130 tons and the space shuttle just 27 tons. However, unlike reusable shuttles, these powerful rockets are mostly one use only. New ones have to be built for every launch. This will be very costly. NASA estimates that it will cost about $3 billion (19 billion yuan) per year, or $18 billion until the first test flight in 2017. NASA hopes to make money by allowing private companies to send astronauts to the International Space Station like giant taxi services, so that the program can be "sustainable". "This is perhaps the biggest thing for space exploration in decades," said Senator Bill Nelson, a former astronaut. "The goal is to fly humans safely beyond low-Earth orbit and deep into outer space where we cannot only survive, but one day also live." Question: It can be inferred from the passage that _ . Options: A: the SLS program is planning to make reusable rockets B: the goal of the SLS program is to enable humans to live on the moon C: the US government may not have provided enough money for the SLS program D: NASA will use SLS as a space taxi between the Earth and Mars
C

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Read the article and select the best answer. Article: In the English language, there are many expressions using the word "mouth". For example, if you say bad things about a person, the person might protest and say "Do not bad mouth me." Sometimes, people say something to a friend or family member that they later regret because it hurts that person's feelings. Or they tell the person something they were not supposed to tell. The speaker might say :"I really put my foot in my mouth this time." If this should happen, the speaker might feel down in the mouth. In other words, he might feel sad for saying the wrong thing. Information is often spread through word of mouth. This is general communication between people, like friends talking to each other. "How did you hear about that new movie?" someone might ask. "Oh, by word of mouth." Sometimes when one person is speaking ,he says the same thing that his friend was going to say . When this happens, the friend might say "You took the words right out of my mouth." Sometimes a person has a bad or unpleasant experience with another person ,he might say "I had my heart in my mouth." Some people have lots of money because they were born into a very rich family. You might say such a person "was born with a silver spoon in his mouth ." This rich person is the opposite of a person who lives from hand to mouth. This person is very poor and only has enough money for the most important things in life. Parents might sometimes keep sweet food from a child ad punishment for saying bad things, For example , if a child says things she should not say to her parents , she might be described as a mouthy child. The parents might even tell the child to stop mouthing off. Question: We can infer from the text that _ . Options: A: English language is color1ful B: he that talks much regrets much C: "mouth" is the word most frequently used D: expressions with "mouth " are of low opinion
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A

Read the article and select the best answer. Article: COLUMBIA, S.C. (AP) -- A group of black parents and civil rights activists presented a petition Thursday calling for officials to drop charges against a 16-year-old South Carolina high school student who was videotaped being dragged from her desk and thrown to the floor by a police officer in her classroom. The group said it was unfair and unacceptable that the student and her 18-year-old classmate at Spring Valley High School who taped the incident were the only people charged that day when authorities already knew Richland County Deputy Ben Fields had tossed the girl from her desk to the ground. They also said their petition had hundreds of thousands of names from around the country asking prosecutor Dan Johnson to drop the "disturbing schools" charges against the teens. The students in the case are black; Fields is white. Johnson issued a statement Wednesday saying he won't do anything with the case until the FBI finishes its investigation into Fields, who was fired after the video became public. "I do not simply decide cases based upon feelings, public opinion or sentiment, nor do I decide them based on political pressure," Johnson said in the statement. Disturbing schools is punishable by a fine of up to $1,000 or 90 days in jail. The students' lawyer did not respond to telephone messages. The video spread quickly across the country, prompting questions about when police officers should get involved with classroom discipline. Fields was called to the classroom after the student refused to stop using her cellphone, and then she would not leave the classroom for a teacher or administrator. In the days after the incident, the teacher turned her class over to a substitute and the administrator was placed on leave. Richland two officials didn't respond to an email asking about their current status. The students were allowed back in school. Organizers of the protest said they plan to be at South Carolina's Statehouse next year, calling for legislators to change the law that allows police officers to arrest... Question: What are the teens charged with? Options: A: Playing cellphones in class B: Disobeying the teacher C: Disturbing schools D: Fighting with the police officer
C