题目内容
Nobody knows whom this new book ___________.
A. is belonged to B. was belonged to
C. belongs to D. is belonged
C
He is a financial manager in Wall Street now, but nobody knows he ________ part-time jobs here and there for survival for eight years.
A.does | B.did | C.had done | D.has done |
The concept of solar power satellites, or SPS, first put forward in the 1960s, is still not widely known by the general public. For example, at many public exhibitions about energy, SPS is not even mentioned. This is mainly because very little money has been spent on SPS research
There are people who claim that SPS is unrealistic - because launch costs are much too high today; or because it is too far away. So why do we believe that it is important to continue to do researches on SPS? The reason is very simple.
Humans are going to need huge amounts of electric power in coming decades. Within 50 years the world population is expected to double, while economic growth will continue around the world, especially in the poorer countries. But existing energy sources already face serious problems. They are limited; they are polluted; they are dangerous. So 50 or 100 years from now, where is our power going to come from? Nobody knows. And so we believe that new large-scale possibilities should be studied further.
We must remember that humans have some choices concerning our future. To some extent we can choose the direction in which our civilization develops. And choices that are made in the coming decades - such as the energy sources that we will or will not use, will have major, long-term meaning for human life on earth. We believe that if research continues to show that SPS is environmentally and economically attractive, SPS will open the door to a much more attractive future for human civilization than any ground-based energy source, and one that the public will support and that young people will find challenging and exciting. Furthermore energy from SPS can be readily used in developing countries, as the SPS 2000 project will show, thus aiding economic development worldwide. In addition, by creating large commercial fund for space engineering, SPS will open the frontier of space to economic development, thus creating a limitless new field for the growth of the world economy.
【小题1】Which of the following may be the best title for the passage?
A.The Future Energy- SPS | B.The Concept of SPS |
C.Humans and SPS | D.Advantages of SPS |
A.The research on SPS started in the 1960s is still not appreciated by the public. |
B.The research is showing SPS can benefit environment and economy at present. |
C.The energy from SPS is now being used in some developing countries. |
D.The public don’t know about SPS because little time is devoted to the research. |
A.the present serious energy problems |
B.where to get energy sources in the future |
C.the importance of controlling world population |
D.the need to explore new energy sources |
A.In time of peace prepare for war |
B.Put the cart before the horse |
C.One man’s meat is another man’s poison |
D.Easier said than done |
D
To us it seems so natural to put up an umbrella to keep the water off when it rains.But actually the umbrella was not invented as protection against rain.Its first use was as a shade against the sun.
Nobody knows who first invented it, but the umbrella was used in very ancient times.Probably the Chinese were the earliest to use it in the eleventh century BC.We know that the umbrella was used in ancient Egypt and Babylon as a sunshade.And there was a strange thing connected with its use: it became a symbol of honor and authority.In the Far East in ancient times, the umbrella was allowed to be used only by royalty or by those in high offices.
In Europe, the Greeks were the earliest to use the umbrella as a sunshade.And the umbrella was allowed in common use in ancient Greece.But it is believed that the earliest persons in Europe to use the umbrella as protection against rain were the ancient Romans.
During the Middle Ages, the use of the umbrella practically disappeared.Then it appeared again in Italy in the late sixteenth century.And again, it was considered a symbol of power and authority.In around 1680, the umbrella appeared in France and later on in England.
By the eighteenth century, the umbrella was used against rain throughout most of Europe.Umbrellas have not changed much in style during all this time, though they have become much lighter in weight.It wasn’t until the twentieth century that women’s umbrellas began to be made in a whole variety of colors.
【小题1】The first use of umbrella was as ______________.
A.protection against rain | B.shade against the sun |
C.a symbol of power and authority | D.a symbol of honor and authority |
A.in Greece | B.in Rome | C.in England | D.in France |
A.the umbrella changed much in style in the eighteenth century. |
B.no one knows why the umbrella was used in very ancient times. |
C.once ordinary people had no right to use umbrellas. |
D.during the Middle Ages the umbrella was common in Europe. |
A.when and how the umbrella was invented. |
B.why the umbrella was so popular in Europe. |
C.the development of the umbrella. |
D.the history and use of the umbrella. |