Trắc Nghiệm Hay giới thiệu đến các bạn Bài tập Tiếng Anh 8 mới Unit 12 Reading có đáp án. Tài liệu bao gồm 15 câu hỏi kèm đáp án thuộc danh mục Tiếng Anh 8 Mới Tập 2. Tài liệu này sẽ giúp các bạn ôn tập, củng cố lại kiến thức để chuẩn bị cho các kỳ thi sắp tới. Mời các bạn tham khảo!
Cập nhật ngày
30/11/2021
Thời gian
15 Phút
Tham gia thi
0 Lần thi
Câu 15: Choose the letter A, B, C or D to answer these following questions
A new study published in the journal Science shows definitive evidence of organic matter on the surface of Mars. The data was collected by NASA's nuclear-powered rover Curiosity. It confirms earlier findings that Mars, the Red Planet once contained carbon-based compounds. These compounds – also called organic molecules – are essential ingredients for life as scientists understand it.
The organic molecules were found in Mars's Gale Crater, a large area that may have been a watery lake over three billion years ago. The rover encountered traces of the molecule in rocks extracted from the area. The rocks also contain sulfur, which scientists speculate helped preserve the organics even when the rocks were exposed to the harsh radiation on the surface of the planet.
Scientists are quick to state that the presence of these organic molecules is not sufficient evidence for ancient life on Mars, as the molecules could have been formed by non-living processes. But it's still one of the most astonishing discoveries, which could lead to future revelations. Especially when one considers the other startling find that Curiosity uncovered around five years ago.
Question:Why are the evidences in sufficient to claim life on Mars?
A. The molecules could have been formed by non-living processes.
B. The molecules exist everywhere on the planet.
C. All planets have these molecules.
D. The existence of these molecules is not strong enough
Chia sẻ:
Đăng Nhập để viết bình luận