III.Read the passage and do the following tasks. THE SOLAR SYSTEM AND THE SUN The solar system is the home to the sun, nine planets including the Earth, the 158 known moons that orbit those planets, as well as a countless number of other celestial bodies that exist throughout this vast space. Such celestial bodies include things like asteroids, meteoroids and comets. Though the events leading up to the formation of the solar system are still being debated, is it believed to be more than 4.6 billion years old. The word "solar" is derived from the Latin word for sun, Sol, leading to the term solar system, or the system of the sun. The planets that orbit the sun within the solar system include Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and the smallest planet of Pluto. Jupiter is by far the largest with an overall mass of more than three times that of the Earth. The sun itself makes up an estimated 99.86% of the solar system's total mass. Situated at the center of the solar system, the sun is actually just a large star whose strong magnetic fields cause other solar matter, mainly planets, asteroids, comets, meteoroids and other debris, to orbit around it. The sun is believed to be more than 4.6 billion years old, and is comprised of mostly hydrogen (74%) and helium (25%). The remaining 1% is made up of small amounts of various heavier elements. Life on earth as we know it would not be possible without the sun. The solar energy from the sun has supported and sustained terrestrial existence on earth since the beginning of time. Plants utilize the sun to aid in photosynthesis. Humans and other mammals require energy from the sun for visual light, heat, as well as for powering modem solar devices. The sun is also directly responsible for determining and regulating the varying climates and weather cycles that occur on earth. Choose the best answer for each question. 1. What does the word 'countless' mean? A. a small number B. a certain number C. a few of D. innumerable 2. What does the word 'vast mean? A. gigantic B. unlimited C. impressive D. mysterious 3. The solar system is the home to? A. planets B. meteoroids C. debris D. All of them Answer the following questions. 4. How does the sun cause solar planets and celestial bodies to orbit around it? 5. What does human use solar energy for? GIÚP MÌNH CẦN RẤT GẤP Ạ:((