(D)
The Earth has a force that pulls things toward itself．We call this force gravity．This is something we live with all the time, and hardly ever think about it．But it is a most important factor in rocket operation and must be overcome if we are to get anywhere in space, or off the ground at all．
Take the throwing of a ball as an example．The harder the ball is thrown, the faster and higher it will go．What is the secret? Its speed．If we could throw the ball hard enough it would go up and up forever and never come down．The speed at which it would have to be thrown to do this is known as escape speed．Of course, we cannot throw a ball hard enough because the speed, required to escape completely from the Earth's gravity is seven miles per second, or over twenty-five thousand miles per hour．
Once escape speed has been reached by a spaceship, no further power is needed．A rocket aimed at the Moon, for instance, will "coast" the rest of the way because the Earth's gravity cannot then pull it back, and there is no air resistance in space to slow it down．This "coasting" is known as "free fall"．That does not mean the rocket is falling down towards the Earth but that it is traveling freely in space without the help of power, like a bicycle coasting downhill．
Free fall is an important feature of space travel：it would be impossible to carry enough oil to supply powered flight all the time．
(76-79题请做在答题纸上，答题卡上76-79空白不作答)
76．How fast will a rocket escape completely from the Earth's gravity?
77．As there is always the Earth's gravitational pull, people ．
78．When a bicycle "coasts" downhill, it ．
79．Why is it unnecessary to supply power for the flight in space all the time?
Section C
Directions：Read the following text and choose the most suitable heading from the list A-F for each paragraph．There is one extra heading which you do not need．
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A．Think while you are reading B．Select a proper material C．Five suggestions for achieving better results D．Read loudly E．Read on F．Use a dictionary at a right time |
(80-84题请按试卷题号顺序，填涂在答题卡相应题号上)
Effective reading should adopt a correct way, and then you can get more by paying less. Here are some hints for reading effectively.
80．
Don't choose a rather difficult book or a too easy one for yourself to read．A book full of new words will make you feel discouraged quickly．To understand those new words, you have to turn to the dictionary quite often．It seems that you are not reading the book but the dictionary．It has no fan at all! On the contrary, a too easy one will only waste your time and cannot do any help．The two extremes may at last make you give up reading．So it's better for you to find a proper book with no more than five new words on each page．
81．
If you come across a new word, do not look it up in a dictionary as quickly as possible．Leave it alone and guess the meaning of it based on the content of the text． This ability is quite necessary in reading．If you know your guess is right later, you will be highly excited at your "success", and your interest in reading is well stimulated．If a word really hinders you from understanding the whole passage, turn to the dictionary by then．I am sure you can remember this word very well, as it has left you such a deep impression for its "troublesome image"．
82．
To comprehend what you are reading, you should think while you are reading, then form your own ideas on some special issues．Try to scribble some lines - a very short journal, to express your ideas．Your writing does not need to be quite formal but expressive．This practice can make you communicate with the original English authors．Day by day, your way of thinking in English will turn into a native way, which is quite important for English writing．
83．
Language has its own beauty, no matter Chinese or English．Don't merely take English as a "test"．Take it as an "entertainment" instead and you will enjoy it through learning．Maybe you should find some beautiful literary works such as a prose or a poem to read, if you like．Try to read them as loudly and unpassionedly as you can. During this process, not only you can enjoy yourself by the great emotions of the writers, but also your pronunciation and your manner of speaking English will be improved．
84．
The last but not the least, keep on reading．If you cannot keep it as a habit, you will suffer from paying without gaining.
第Ⅱ卷(45分)
40．Why! I have nothing to confess．_____ you want me to say?
A．What is it that B．What it is that
C．How is it that D．How it is that
Section B (9分)
Directions: Complete the passage by using the proper words in the box．Each word can only be used once．Note that there is extra word in the box．
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A．valuable B．involved C．motivated
D．contribute E．convenient F．services G．generous H．efforts I．rewards J．contact |
Communities always have needs that are difficult to meet．Volunteers, offering their 41
for free, can be a big help．Through their unselfish 42 , they make caring for others an important part of life．
Volunteers are 43 by a variety of things, but all of them agree that the 44 of charitable work can be precious．It is easy to meet people with similar interests, which is important to most volunteers．Voluntary work is also a 45 way for teenagers to develop new skills and gain 46 experience, as well as make useful contacts．This can lead to employment opportunities in the future．
It is very simple if you want to get 47 , Start by making some enquiries at school．Your teacher will be able to give you plenty of advice on whom to 48 if you want to 49 some
of your time to a voluntary organization．