Space Shuttle Project is one of the first huge-typed spaceflight instruments used for many times in the world, organized by American National Aviation andSpaceflight Bureau, the main researches of (1) are researching and making the system of space shuttle, suggesting and choosing (2) and landing ports,deciding the scheme of reclaiming the roll booster of solid rocket, (3) the establishment of repairing the roll booster, and rebuilding and expanding the building of the (4) and controlling system.At the beginning of 1969, the United States set up a group that specially researched the development direction of spaceflight with(5) for the next stage, (6) by deputy president. After (7) and research, it suggested that an aerocraft with great benefits in (8) should be made, eg (9) the spaceflight being its leading stanchion. In this project, five orbit implements were prescribed to be made,
(10) " Exploitation", " Columbia", " Challenger","Discovery" and "Atlands".
In 1970, spaceflight got into an all-round (11) of research and manufacture. The whole-project had to delay more than three years. Five orbit implements were (12) to be four and flight experiment for six times was also decreased for four, (13) the number of production was cut down, according to the original scheme. In April 1971 this (14) was decided that Kennedy Space Centre was used for the launching and landing port for space shuttles, and Edwards Air Base was used for the(15) landing port. In February 1977,"Exploitation" Orbit Implement started to have entering and landing experiment sin Edwards Air Base. From May 12, 1981 to July 4, 1982, "Columbia" Space Shuttle successfully finished four flight experiments for research and manufacture, (16) meant that the (17) and manufactures were over in (18) form.
It (19) about 12 years and cost more than 75 billion US dollars to finish the whole project. On November 11, 1990, space shuttles began to fly for (20) .

A:dedicated B:boosted C:browsed D:decreased

America put more people in prison in the 1990s than in any decade in its history. That started a debate over the wisdom of spending billions of dollars to keep nearly 2 million people locked up. According to statistics, the United States ends 1999 with 1983084 men and women in prisons. That shows an increase of nearly 840,000 prisoners during the 1990s and makes the United States the country with the highest prisoner population in the world. With the cost of housing a prisoner at about ＄20,000 a year the cost in 1999 for keeping all these prisoners behind bars is about ＄ 39 billion.
Some experts argue that the money is well spent, saying the cost of keeping prisoners behind bars doesn’t seem much in comparison in the 1990s coincided with (与……相一致) a steady drop in the US crime rates. It is reported that serious crime has decreased for seven years in a row. "There are noticeable number of people who don’t do crimes because they don’t want to go to prison," they say.

A:crime will cost more money to society B:the government can well afford the money C:the number of prisoners is not really large D:prisoner population decreased in the 1990s

The population of the village has decreased ______ 150 to 500.

A:in B:at C:by D:with

America put more people in prison in the 1990s than in any decade in its history. That started a debate over the wisdom of spending billions of dollars to keep nearly 2 million people locked up. According to statistics, the United States ends 1999 with 1983084 men and women in prisons. That shows an increase of nearly 840,000 prisoners during the 1990s and makes the United States the country with the highest prisoner population in the world. With the cost of housing a prisoner at about $20,000 a year the cost in 1999 for keeping all these prisoners behind bars is about $39 billion.
Some experts argue that the money is well spent, saying the cost of keeping prisoners behind bars doesn’t seem much in comparison in the 1990s coincided with (与……相一致) a steady drop in the US crime rates. It is reported that serious crime has decreased for seven years in a row. "There are noticeable number of people who don’t do crimes because they don’t want to go to prison," they say.
Some experts argue that the money is well spent because ______.

A:crime will cost more money to society B:the government can well afford the money C:the number of prisoners is not really large D:prisoner population decreased in the 1990s

Passage Two

A:crime will cost more money to society B:the government can well afford the money C:the number of prisoners is not really large D:prisoner population decreased in the 1990s

America put more people in prison in the 1990s than in any decade in its history. That started a debate over the wisdom of spending billons of dollars to keep nearly 2 million people locked up. According to statistics, the United States ends 1999 with 1, 983, 084 men and women in prisons. That shows an increase nearly 840, 000 prisoners during the 1990s and makes the United States the country with the highest prison population in the world. With the cost of housing a prisoner at about MYM20, 000 a year, the cost in 1999 keeping all these prisoners behind bar is about MYM39 billion. Some experts argue that the money is well spent, saying the cost of keeping prisoners behind back doesn’t seem much in comparison to the cost of crime to society. They also point out that the rise in the prisoner population in the 1990s coincided with(与……相一致)a steady drop in the US crime rates. It is reported that serious crime has decreased for seven years continuously. "There are a noticeable number of people who don’t do crimes because they don’t want to go to prison, " they say.Some experts argue that it is necessary to spend the money because______.

A:crime will cost even more money to society B:the government can well afford the money C:the number of prisoners is not really large D:prisoner population decreased in the 1990s

America put more people in prison in the 1990s than in any decade in its history. That started a debate over the wisdom of spending billons of dollars to keep nearly 2 million people locked up. According to statistics, the United States ends 1999 with 1, 983, 084 men and women in prisons. That shows an increase nearly 840, 000 prisoners during the 1990s and makes the United States the country with the highest prison population in the world. With the cost of housing a prisoner at about MYM20, 000 a year, the cost in 1999 keeping all these prisoners behind bar is about MYM39 billion. Some experts argue that the money is well spent, saying the cost of keeping prisoners behind back doesn’t seem much in comparison to the cost of crime to society. They also point out that the rise in the prisoner population in the 1990s coincided with(与……相一致)a steady drop in the US crime rates. It is reported that serious crime has decreased for seven years continuously. "There are a noticeable number of people who don’t do crimes because they don’t want to go to prison, " they say.Some experts argue that it is necessary to spend the money because______.

A:crime will cost even more money to society B:the government can well afford the money C:the number of prisoners is not really large D:prisoner population decreased in the 1990s