Bài tập tiếng Anh lớp 8----- Nội dung dịch tự động từ ảnh ----- 18w many planets are there in our galaxy? That's a tricky question to answer. Are there other planets that support life? That's exactly what the Kepler mission hopes to discover.NASA launched the Kepler space telescope, designed to find habitable planets, in 2009. So far it has discovered five new Earth-sized planets beyond our Solar System. These planets are hotter than the Earth - much too hot for life as we know it. The Kepler team predict that they will need at least three years to find an Earth-like planet. letter A, B, C or D on your answer sheet to indicate the correct The simplest requirement for a planet to have life is for there to be liquid water so the distance from the planet's sun and therefore temperature is important. There also needs to be the correct amount of air. If a planet is as small as Mars (half the size of Earth) its weak gravity means that it can't hold on to air molecules. If a planet is Neptune-sized (four times bigger than Earth) it has very strong gravity and too much air. So size matters too. The cost of the mission is approximately six hundred million dollars. It is scheduled to observe until 2013 but this could be extended. Will we be sad if we discover we are alone in our galaxy or happy if we find that we share it with other life forms? 29. What is the passage about? A. Planets in our Solar System B. The difference between Earth and other planets 30. The Kepler space telescope is looking for. A. new planets in our galaxy B. life on other planets 31. Kepler has found five planets that. A. has water and air B. are similar to Earth C. Space exploration to find habitable planets D. NASA's missions to explore the outer planets C. liquid water on other planets D. Earth-sized planets in the Solar System C. are not too far away from the Earth D. are not in our Solar System 32. The Kepler team predict that they will need to find an Earth-like planet. A. three years and possibly longer B. as much as three years 33. Which of the following statements is NOT true? A. The planet can support life if it has water and air. B. A very small planet will not have enough air. C. no more than three years D. approximately three years C. Earth is four times as big as Neptune. D. Kepler mission is scheduled to end in 2013. Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction 34: Mr. Thanh said that he could(A) visit mars with(B) his old(C) friends next week(D). 35. We don't (A) really (B) have money enough(C) to buy (D) this house 33 36.The main character in(A)the novel is an(B) girl who makes friends(C)with some aliens from(D)a planet. 37: Many(A) people said that they will have(B) a trip to the(C) Moon the next year or in(D) the future. Mark letter A, B, C or D indicate the sentence that is closest in meaning to the original sentence 38. He said to me, "I must finish these works on time. A. He said to me that I must finish these works on time. B. He said to me that he must finish these works on time. C. He said to me that he had to finish those works on time. D. He said to me that I must finish those works on time. 39: There was a cow on the street. All the cars stopped. A.As there was a cow on the street, so all the cars stopped. B.There was a cow on the street, but all the cars stopped. C.Though there was a cow on the street, all the cars stopped. D.Because there was a cow on the street,all the cars stopped 40. "They will build a new English center here," he said. A. He said they would build a new English center here. C. He said they would build a new English center there. B. He said they build a new English center here D. He said they built a new English center here. |