( ) 2.―Will you come to my birthday party on Sunday?
——Sure. I'm glad I am invited.
A.can B.could
C. are able to D. be able to
2. D be able to可用于多種時態(tài)；can只能用于一般現(xiàn)在時和一般過去時。
題目來源：仁愛英語同步練習冊九年級上冊下冊合訂本 > Topic2 I'm excited about the things that will be discovered in the future.
階梯計算系列答案科目：初中英語 來源： 題型：
( ) 3. 75-year-old Mrs. Liu is very healthy, and she lives in the small village all
A. on the way B. by the way
C. on her own D. as well as
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( ) 4.——____ do you want to be when you grow up?
—A teacher. That's my dream.
A. Who B. Which
C. What D. Where
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( ) 5.—Do you believe there are aliens?
—No，because no life in space any information us so far.
A. send;to
B. has sent;to
C. launch;to
D. has launched;to
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( ) 7.——Please plant these trees at a of twenty meters away from our house.
—OK. I will.
A. distance B. diameter
C. limit D. gravity
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科目：初中英語 來源： 題型：
use，travel，effect，small, it， move,is, if,from,run
Some of us may know nothing about " black holes.”In fact, they are not real holes like those in the walls or in the ground, but an object in space or outer space with extremely large gravity. 1 gravity is so strong that even light can't escape from the black hole. A black hole is from a collapsed ( i丹塌)super star. When a super star 2 out of its fuel(燃料)，it will collapse. Its gravity remains the same,but in a 3space, the star no longer produces light.
The gravity of a black hole is so huge that all the objects that used to go around the super star continue to 4 around the black hole. However, 5 an object is close to the black hole, it will 6 pulled into the black hole.
"The huge gravity of a black hole is so terrible！Even if nuclear weapons(原子彈)are
7 to attack a black hole, all the 8could only be a small hole，" said a scientist 9 New York. There are over 10 million black holes in the universe. Some are 10 and othefs are not. They have so huge gravity. Can they affect our earth one day? We don't know.
1.__________ 2.______ 3.________
4.______ 5.______ 6.________
7.______ 8._________ 9.
10._______
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( ) 3. Every day people visit the Science Museum. They've learnt lots of knowledge about space.
A. five thousand of
B. five thousands of
C. five thousands
D. thousands of
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Now satellites are helping to forecast(預報) the weather. They are in space，and they can reach any part of the world. The satellites take pictures of the atmosphere(大氣層)，because this is where the weather forms. They send these pictures to the weather station. So the scientists there can see the weather of any part of the world and tell how the weather will change.
Today, nearly five hundred weather stations in sixty countries can receive satellite pictures. When they receive new pictures，they compare them with the earlier ones. They may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In the next weather forecast, they can tell people about it.
So the weather satellites offer great help for the scientists at the stations. In the past, they could forecast the weather about 24 or 48 hours earlier. Now they can make good forecasts for 3 or 5 days. Soon,perhaps, they may be able to forecast the weather for a week or more ahead(提前）.
根據(jù)短文內(nèi)容，選擇最佳答案。
( ) 1. The weather forms
A. in any part of the world
B. in the atmosphere
C. in space
D. on the ground
( ) 2. Changing clouds in the atmosphere means
A. it is a rainy day
B. it is a windy day
C. the weather will change
D. it is a sunny day
( ) 3. Without satellites，scientists could forecast the weather for ahead.
A. a week or more
B. 1 or 2 days
C. 2 or 5 days
D. two weeks
( ) 4. What does the underlined word"compare"mean in Chinese?
A.與……相似 B.將……比作
C.交換 D.對比
( ) 5. Which of the following is TRUE according to the passage？
A. The satellites take pictures of the weather station.
B. The weather forecast is quite exact.
C. The weather satellites are now used in weather forecasting.
D. Now the satellites can forecast the weather for a week.
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