Read the passage and choose the correct answer to each question:
Europa is the smallest of planet Jupiter’s four largest moons and the second moon out from Jupiter. Until 1979, it was just another astronomy textbook statistic. Then came the close-up images obtained by the exploratory spacecraft Voyager 2, and within days, Europa was transformed into one of the solar system’s most intriguing worlds. The biggest initial surprise was the almost total lack of detail, especially from far away. Even at close range, the only visible features are thin, kinked brown lines resembling cracks in an eggshell. And this analogy is not far off the mark.
The surface of Europa is almost pure water ice, but a nearly complete absence of craters indicates that Europa’s surface ice resembles Earth’s Antarctic ice cap. The eggshell analogy may be quite accurate since the ice could be as little as a few kilometers thick – a true shell around what is likely a subsurface liquid ocean that, in turn, encases a rocky core. The interior of Europa has been kept warm over the eons by tidal forces generated by the varying gravitational tugs of the other big moons as they wheel around Jupiter. The tides on Europa pull and relax in an endless cycle. The resulting internal heat keeps what would otherwise be ice melted almost to the surface. The crack-like marks on Europa’s icy face appear to fracture where water or slush oozes from below.
Soon after Voyager 2’s encounter with Jupiter in 1979, when the best images of Europa were obtained, researchers advanced the startling idea that Europa’s subsurface ocean might harbor life. Life processes could have begun when Jupiter was releasing a vast store of internal heat. Jupiter’s early heat was produced by the compression of the material forming the giant planet. Just as the Sun is far less radiant today than the primal Sun, so the internal heat generated by Jupiter is minor compared to its former intensity. During this warm phase, some 4.6 billion years ago, Europa’s ocean may have been liquid right to the surface, making it a crucible for life.
The author mentions “cracks in an eggshell” in the first paragraph in order to help readers ______
Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
Lời giải:
Báo saiGiải thích: Even at close range, the only visible features are thin, kinked brown lines resembling cracks in an eggshell. And this analogy is not far off the mark. => Ngay cả ở khoảng cách gần, các đặc điểm duy nhất có thể nhìn thấy là những đường mỏng, gấp khúc màu nâu giống như vết nứt trên vỏ trứng. Và sự tương tự này không phải là quá xa.
Tạm dịch: Tác giả đề cập đến "vết nứt trong vỏ trứng" trong đoạn đầu tiên để giúp người đọc ______.
A. Đánh giá cao thông tin có được bằng cách xem Europa từ xa
B. Hình dung Europa như các nhà khoa học đã nhìn thấy nó trong các hình ảnh của Voyager 2
C. Hiểu mối quan hệ của Europa với hệ mặt trời
D. Nhận ra sự giống nhau của Europa với các mặt trăng khác của Sao Mộc