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阅读理解

  Jupiter’s Moons and How They Travel

  The many moons of Jupiter travel around the planet in different directions(方向).

  Jupiter is the largest planet in our solar system.Over the years, scientists have found that Jupiter has its own small solar system.Earth has one moon.Jupiter has at least sixteen and probably more.

  Since there are 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 now 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 127,600 kilometers away from Jupiter.All the inner moons circle the planet in counter-clockwise direction, that is, opposite of the hands of a clock.

  Jupiter’s middle group of moons are at least 11,100,000 kilometers from the planet.They also move in a counter-clockwise motion(moving).The four farthest moons are at least 20,700,000 kilometers away.These are called “outer moons”.They circle in a clockwise motion.

  How many more moons do you think will be discovered?

(1)

What does “solar system” in this article mean?________

[  ]

A.

银河系

B.

宇宙空间

C.

流星雨

D.

太阳系

(2)

Things that travel in the same direction as the hands of a clock are said to be traveling in a________.

[  ]

A.

clockwise direction

B.

counter-clockwise direction

C.

same direction

D.

different direction

(3)

Jupiter’s ________group of moons travel in a clockwise direction.

[  ]

A.

planets

B.

inner

C.

middle

D.

outer

(4)

The numbers given to Jupiter’s moons tell ________.

[  ]

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 names

(5)

According to the passage,which of the following statements is true?

[  ]

A.

None of Jupiter’s moons have names.

B.

Most of Jupiter's moons circle clockwise.

C.

Jupiter's inner moons were discovered first.

D.

Jupiter is the nearest planet to the earth.

(6)

How far away are the middle group of moons from Jupiter?

[  ]

A.

It’s not mentioned.

B.

11,100,000 kilometers away.

C.

127,600 kilometers away.

D.

20,700,000 kilometers away.

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阅读理解(Reading comprehension)

Jupiter's Moons and How They Travel

  Many moons of fupiter travel around the planet in different directions(方向).

  Jupiter is the largest planet in our solar system. Over the years, scientists have found that Jupiter has its own small solar system. Earth has one moon. Jupiter has at least sixteen and probably more.

  Since there are 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 now 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 127, 600 kilometers away from Jupiter. All the inner moons circle the planet in counter-clockwise direction, that is, opposite of the hands of a clock.

  Jupiter's middle group of moons are at least 11, 100, 000 kilometers from the planet. They also move in a counter-clockwise motion(moving). The four farthest moons are at least 20,700,000 kilometers away. These are called “outer moons”. They circle in a clockwise motion.

  How many more moons do you think will be discovered?

1.What does “solar system” in this article mean?

[  ]

A.银河系
B.宇宙空间
C.流星雨
D.太阳系

2.Things that travel in the same direction as the hands of a clock are said to be traveling in a________.

[  ]

A.clockwise direction

B.counter-clockwise direction

C.same direction

D.different direction

3.Jupiter's ________ group of moons travel in a clockwise direction.

[  ]

A.planets
B.inner
C.middle
D.outer

4.The numbers given to Jupiter's moons tell________.

[  ]

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 names

5.According to the passage, which of the following statements is true?

[  ]

A.None of Jupiter's moons have names.

B.Most of Jupiter's moons circle clockwise.

C.Jupiter's inner moons were discovered first.

D.Jupiter is the nearest planet to the earth.

6.How far away are the middle group of moons from Jupiter?

[  ]

A.It's not mentioned.

B.11,100,000 kilometers away.

C.127,600 kilometers away.

D.20,700,000 kilometers away.

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Get one student to say a cardinal numeral, then another student says its ordinal numeral at once.

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There was a football competition at David's school. Look at the results. Fill in the blanks with the correct cardinal and ordinal numbers.

Class 1, Grade 7 got a total of (1) ________ goals in the school football competition. They came (2) ________. Class 3, Grade 7 got (3) ________ goals. They came (4) ________. Class 2, Grade 7 got (5) ________ goals and came (6) ________.

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阅读理解

  A Leg Walking Right

  Here are some signs + - ×…, the signs are very different.They mean very different things.When you see them, you know what to do.This sign + means that you will add some numerals.This sign-means that you will take one numeral away from another.You will subtract(减去).What will you do when you see x and… ?

  Our signs are easy to read.They are easy signs to remember.Look at these two signs….The ancient Egyptians used these signs.A picture of a leg walking to the left told them to add some numerals.A picture of a leg walking to the right told them to subtract.

  In the 1500s people used this printed(印刷的)sign & to add numerals.After a while the sign began to look like this….Later, the sign became +.

How much is 2…2?

(1)

What do you do when you see this sign +?

[  ]

A.

Walk away

B.

Write a numeral

C.

Read a sign

D.

Add

(2)

The word in the story that means to take one numeral away from another is ________.

(3)

The story says, “Our signs are easy to read.They are easy signs to remember”.The word they means ________.

(4)

Which of the following does this story lead to believe?

[  ]

A.

Egyptians could not add numerals together

B.

All Egyptians had two left legs.

C.

Our signs are not hard to understand

(5)

What did the sign to add numerals begin to look like(which sentence is exactly like the one in your book)?

[  ]

A.

After a while, the sign began to look like this….

B.

After a while, the sign began to look like this +.

C.

After a while, the sign began to look like this &.

(6)

The main idea of the whole story is that ________.

[  ]

A.

the signs for adding and subtracting have changed.

B.

People could not write in the 1500s

C.

the old signs were good for Egyptians but not for us

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