Dưới đây là phần trích dẫn nội dung của tài liệu đầu tiên được lấy ra từ BST Đề thi ViOlympic Tiếng Anh Lớp 12 - Đề thi số 131:
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Rock and soil samples brought back from the moon by the Apollo astronauts have taught scientists much about the composition of the moon. Moon soil contains small bits of rock and glass and was probably ground from larger rocks when meteors impacted with the surface of the moon. 5 Scientists found no trace of animal or plant life in the moon soil. In addition to the moon soil, astronauts gathered two basic types of rocks from the surface of the moon: basalt and breccia. Basalt is a cooled and hardened volcanic lava common to the earth. Since basalt is formed under extremely high temperatures, the presence 10 of this type of rock is an indication that the temperature of the moon was once extremely hot. Breccia, the other kind of rock brought back by the astronauts, was formed during the impact of falling objects on the surface of the moon. This second type of rock consists of small pieces of rock compressed together by the force of impact. 15 Gases such as hydrogen and helium were found in some of the rocks, and scientists believe that these gases were carried to the moon on the streams of gases that are constantly emitted from the sun.
1. Which of the following would be the most appropriate title for this passage?
(A) The Apollo Astronauts
(B) Soil on the Moon
(C) What the Moon is Made of
(D) Basalt and Breccia
2. According to the passage, what does moon soil consist of?
(A) Hydrogen and helium
(B) Large chunks of volcanic lava
(C) Tiny pieces of stones and glass
(D) Streams of gases
3. Which of the following was NOT brought back to the earth by the astronauts?
(D) Plant life
4. According to the passage, breccia was formed
(A) when objects struck the moon
(B) from volcanic lava
(C) when streams of gases hit the surface of the moon
(D) from the interaction of helium and hydrogen
5. According to the passage, what do scientists believe about the gases found in the moon rocks?
(A) The gases came to the moon from the sun.
(B) The gases were created inside the rocks.
(C) The streams of gases went to the sun.
(D) The emittance of the gases caused the moon's temperature to rise.
6. The author's purpose in this passage is to
(A) describe some rock and soil samples
(B) explain some of the things man has learned from space flights
(C) propose a new theory about the creation of the moon
(D) demonstrate the difference between basalt and breccia
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