题目内容
阅读理解
Jupiter's Moons and How They TravelThe many moons of Jupiter travel around the planet in different directions.
Jupiter is the largest planet in our solar system. Over the years, scientists have found that Jupiter has its own small solar sys tem. Earth has one moon. Jupiter has at least sixteen and probably more.
Since there were so many moons, scientists began to number them. The numerals ( numbers ) tell the sequence, or order, in which the moons were found. They were slower to name the moons. All of Jupiter's moons raw have a name as well as a number.
The first five moons to be discovered are known as the “inner moons”. But they are not the closest to the planet. The closest is only 127600 kilometers away from Jupiter. All the inner moos circle the planet in courtier-clockwise direction, that is, opposite of the hands of a clock.
Jupiter's middle group of moons ere at least 11100000 kilometers fin the planet. They also eve in a counter-clockwise motion (moving). The four farthest moots are at least 20,700,000 kilometres away. These are called “outer moons”. They circle in a clockwise motion.
How marry more moons do you think will be discovered?
1．What does“solar system”in this article mean? ________.
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2．Things that travel in the same direction as the hands of a clack are said to be traveling in a ________.
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A．clockwise direction
B．counter-clockwise direction
C．same direction
D．different direction
3．Jupiter's ________ group of moons travel in a clockwise direction.
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4．The number given to Jupiter's moons tell ________.
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A．the order in which they were discovered
B．the order in which they travel
C．the order of their distance from Jupiter
D．the order of the names
5．According to the passage, which of the following statements is true?________.
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A．None of Jupiter's moons have names
B．Most of Jupiter's moons circle clockwise
C．Jupiter's inner moors were discovered first
D．Jupiter is the nearest planet to the earth
