Tiêu đề 15. UNIT 12 - LIFE ON OTHER PLANETS.docx ✅

4 operate until 2018. NASA officially declared the Opportunity mission to be ended in February 2019. (Adapted from: https://kids.britannica.com) 1. What are the Mar Exploration Rovers? A. Computers B. Wheels C. Robots D. Planets 2. The phrase touched down in paragraph 1 is closest in meaning to ________. A. landed B. affected C. moved D. examined 3. How many wheels did each rover have? A. 4 B. 5 C. 6 D. 7 4. The rovers sent responses to ________ through computers and antennas. A. Mars creatures B. spacecrafts C. UFOs D. NASA scientists 5. How long did the Opportunity mission last? A. About 90 days B. About 8 years C. Less than 10 years D. Nearly 16 years IX. Read and complete each numbered blank in the passage with the correct answer A, B, C, or D. Thousands of years before the invention of the Internet, people entertained (1) ________ by gazing into the sky at night and connecting the stars to create pictures of animals, objects, and legendary heroes. These ancient stargazers noticed that some shining stars just followed their own paths across the (2)________ sky. The ancient Greeks called them “planetes”, meaning wanderers. What exactly is a planet? It sounds like an extremely (3) ________ question. However, there have been a lot of debates in the scientific world until recently. In 2006, scientists came up with three (4) ________ for planethood. A planet must orbit the sun; it must be large enough so that its own gravity makes it into a spherical shape, and it must have an orbit free of other small objects. Pluto, which was once considered the “ninth planet” in the solar system, (5) ________ to meet the third condition. Therefore, it was downgraded into a dwarf planet. (Adapted from: https://kids.nationalgeographic.com) 1. A. others B. someone C. themselves D. neighbours 2. A. night B. bright C. blue D. day 3. A. promising B. difficult C. debatable D. easy 4. A. types B. conditions C. ideas D. grades 5. A. strived B. wanted C. failed D. managed SPEAKING X. Choose the best option A, B, C, or D to indicate the most suitable answer to complete each of the following exchanges. 1. - Nam: Do you think that Pluto has an atmosphere? - Peter: ________ A. I think she’s right. B. It’s mine. C. It’s a dwarf planet. D. I doubt it. 2. - Lan: Will Ann come to the space research centre this afternoon? - Peter: ________ A. Yes, I will. I like it very much. B. She’d love to buy some flowers. C. I’m not sure. She finishes her morning class very late. D. It’s a terrible trip, isn’t it? 3. - Son: Can we watch the stars in the sky tonight? - Father: ________