—Mary knows so much about . earth!
—Yes, you know she is only . eight-year-old girl.
A. the; a B. an; an C. the; an D. an; a
九年级英语单项填空简单题
—Mary knows so much about . earth!
—Yes, you know she is only . eight-year-old girl.
A. the; a B. an; an C. the; an D. an; a
九年级英语单项填空简单题查看答案及解析
--- Mary knows so much about ______earth!
---Yes, although she is only ____eight- year-old girl.
A. an; a B. the; an C. the; a D. an; an
九年级英语单项填空简单题查看答案及解析
---John knows so much about the alien.
--- Yes, you know he is only_______ eight-year-old boy.
A. a B. an C. the D. /
九年级英语单项填空困难题查看答案及解析
How much do you know about Earth-the planet that we live on? Our knowledge of Earth has been developing since ancient times. However, many puzzles about Earth remain unsolved. Live Science has published a list of the eight biggest mysteries about Earth. Let's look at some of them.
Where did water come from?
When it first came into being 4.5 billion years ago, Earth was a dry rock. So where did all of our water come from? Scientists think that it might have arrived in the form of ice by an asteroid(小行星) from outer space that hit our planet. But this theory has not been confirmed because there is very little related evidence(相关证据)to be studied.
What's in the core(地核)?
Scientists used to study meteorites(陨石)as small examples of Earth, believing that Earth's core was made of iron and nickel(镍). However, a later study in the 1950s proved this way to be wrong because it found that Earth would be too light to provide gravity if its core contained only iron and nickel. Today, scientists continue to bring forward different theories, but none have been confirmed.
How was the Moon born?
Scientists have found that the chemical compositions(成分)of Earth and the Moon are very similar. That suggests that the Moon actually came from Earth. For example, it could be a piece of Earth that separated when Earth hit another planet. It is also possible that when Earth first came into being, it spun(旋转)very fast and threw off enough molten(熔化的)rock to later from the Moon.
1.What's the story mainly about?
A.How Earth came into being. B.Where Earth's water came from.
C.How the Moon was formed. D.Unexplained mysteries about Earth.
2.What do we know about where water may come from?
A.Earth's water may come from ice that melted 4.5 billion years ago.
B.Earth's water may come from a small planet that hit Earth.
C.We don't know where water came from.
D.There is lots of evidence that tells us where water came from.
3.What does the underlined phrase "bring forward" in Paragraph 5 probably mean?
A.Check. B.Raise. C.Improve. D.Receive.
4.Which of the following is TURE according to the passage?
A.Scientists believed Earth's core was made of meteorites.
B.A study in the 1950s proved that Earth's core is made of iron and nickel.
C.The Moon and Earth are made of similar materials.
D.Three possibilities of where the Moon came from are mentioned.
九年级英语阅读单选中等难度题查看答案及解析
How much do you know about Earth—the planet that we live on? Our knowledge of Earth has been developing since ancient times. However, many puzzles (谜) about Earth remain unsolved. Live Science has published a list of the eight biggest mysteries about Earth. Let’s look at some of them.
Where did water come from?
When it first came into being 4.5 billion years ago, Earth was a dry rock. So where did all of our water come from? Scientists think that it might have arrived in the form of ice by an asteroid (小行星) from outer space that hit our planet. But this idea has not been confirmed (证明) because there is very little related evidence(相关证据) to be studied.
What’s in the core (地核)?
Scientists used to study meteorites (陨石) as small examples of Earth, believing that Earth’s core was made of iron and nickel (镍). However, a later study in the 1950s proved this way to be wrong because it found that Earth would be too light to provide gravity (引力) if its core contained only iron and nickel. Today, scientists continue to bring forward different ideas, but none have been confirmed.
How was the moon born?
Scientists have found that the chemical compositions (成分) of Earth and the Moon are very similar. That suggests that the Moon actually came from Earth. For example, it could be a piece of Earth that separated when Earth hit another planet. It is also possible that when Earth first came into being, it spun (旋转) very fast and threw off enough molten (熔化的) rock to later form the Moon.
1.What’s the main idea of the passage?
A.How Earth came into being.
B.Where Earth’s water came from?
C.How the moon was formed?
D.Unexplained mysteries about Earth.
2.What do we know about where water may come from?
A.Earth’s water may come from ice that melted 4.5 billion years ago.
B.Earth’s water may come from a small planet that hit Earth.
C.We don’t know where water came from.
D.There is lots of evidence that tells us where water came from.
3.What does the underlined phrase “bring forward” in Paragraph 5 probably mean?
A.Check B.Raise
C.Improve D.Receive
4.Which of the following is TRUE according to the passage?
A.Scientists used to believe Earth’s core was made of meteorites.
B.A study in the 1950s proved that Earth’s core is made of iron and nickel.
C.The moon and Earth are made of similar materials.
D.Three possibilities of where the Moon came from are mentioned.
九年级英语阅读单选中等难度题查看答案及解析
Frank knows so much about _____ earth although he is only ____eight-year-old boy.
A. an; the B. the; an C. an; an
九年级英语单项填空中等难度题查看答案及解析
（题文）(2017·山东泰安· 21)—Do you know ________ girl with long curly hair?
—Yes，she is Mary. She plays ________ tennis very well.
A. a；/ B. the；/ C. the；the D. a；the
九年级英语单选题中等难度题查看答案及解析
—Do you know _____ girl with long hair?
—Yes, she is Mary. She plays _____ basketball very well.
A. a; / B. the; / C. a; the D. an;/
九年级英语单选题中等难度题查看答案及解析
—Do you know the girl______Mary Smith?
—Yes. She’s my friend.
| A．call | B．calls | C．called | D．calling |
九年级英语单项填空简单题查看答案及解析
–Do you know ______ girl with long curly hair?
--Yes, she is Mary. She plays ______ tennis very well.
A. a, / B. the, / C. the, the D. a, the
九年级英语单项填空中等难度题查看答案及解析