[单项选择]第三篇 Almost Human Scientists are racing to build the world’s first thinking robot .This is not science fiction：some say they will have made it by the year 2020.Carol Packer repots． Machines that walk，speak and feel are no longer science fiction．Kismet is the name of an android(机器人)which scientists have built at the Massachusetts Institute of Technology(MIT)．Kismet is different from the tradition。al robot because it can show human emotions．Its eyes．Ears and lips move to show when it feels happy．sad or bored．Kismet is one of the first of a new generation of androids—robots that 100k like human beings—which can imitate human feelings．Cog，another android invented by the MIT, imitates the action of a mother Howere, scientists admit that so far Cog has the mental ability of a two．year．old． The optimists(乐观主义者)say that by the year 2020 we will have created humanoids(机器人)with brains similar to those of an adult human being．These robots will be designed to
A. it thinks for itself．
B. it is not 1ike science fiction．
C. it Can 100k after two-year—olds．
D. it seems to have human feelings

[单项选择]第三篇 Almost Human Scientists are racing to build the world’s first thinking robot .This is not science fiction：some say they will have made it by the year 2020.Carol Packer repots． Machines that walk，speak and feel are no longer science fiction．Kismet is the name of an android(机器人)which scientists have built at the Massachusetts Institute of Technology(MIT)．Kismet is different from the tradition。al robot because it can show human emotions．Its eyes．Ears and lips move to show when it feels happy．sad or bored．Kismet is one of the first of a new generation of androids—robots that 100k like human beings—which can imitate human feelings．Cog，another android invented by the MIT, imitates the action of a mother Howere, scientists admit that so far Cog has the mental ability of a two．year．old． The optimists(乐观主义者)say that by the year 2020 we will have created humanoids(机器人)with brains similar to those of an adult human being．These robots will be designed to
A. It looks 1ike a mother．
B. It behaves 1ike a child．
C. It can imitate血e behavior of a mother
D. It has a huge brain

[单项选择]第三篇 Human Space Exploration While scientists are searching the cause of the Columbia disaster, NASA is moving ahead with plans to develop a new craft that would replace shuttles(航天飞机)on space stationmissions by 2012 and respond quickly to space station emergencies． The space agency released the first set of mission needs and requirements several days ago for me orbital space plane(轨道航天飞机)，which would be designed to transport a crew of four to and from the International Space Station． Although it includes few specifics，the plan states the orbiter(轨道航天飞机)will be safer cheaper and require less preparation time than the shuttle．It would be able to transport four crew members by 2012--though it would be available for rescue missions by 2010.NASA says the craft should be able to transport injured or ill space station crew members to“definitive(决定性的)medical care” within 24 hours． The release of the requirements showed NASA remains focused on the long-te
A. control the International Space Station．
B. carry astronauts to the International Space Station．
C. transport equipment to the International Space Station
D. train astronauts in space flights．

[单项选择]第一篇 Almost Human Scientists are racing to build the world’s first thinking robot．This is not science fiction：somesay they will have made it by the year 2020 Carol Packer reports Machines that walk，speak and feel are no longer science fiction．Kismet is the name of an android(机器人)which scientists have built at the Massachusetts Institute of Technology(MIT)． Kismet is different from the traditional robot because it Can show human emotions．Its eyes，ears and lips move to show when it feels happy. sad or bored．Kismet is one of the first of a new generation of androids——robots that look like human beings——which Can imitate human feelings．Cog，another android invented by the MIT, imitates the action of a mother．However, scientists admit that So far Cog has the mental ability of a two—year—old． The optimists(乐观主义者)say that by the year 2020 we will have created humanoids(机器人)with brains similar to those of all adult human being．These robots will be designed to look l
A. it thinks for itself
B. It is not like science fiction
C. it can look after two—year-old．
D. it seems to have human feelings．

[单项选择]第三篇 　　 Water 　　The second most important constituent (构成成份) of the biosphere (生物圈) is liquid water. This can only exist in a very narrow range of temperatures, since water freezes at 0℃ and boils at 100℃. Life as we know it would only be possible on the surface of a planet which had temperatures somewhere within this narrow range. 　　The earth’s supply of water probably remains fairly constant in quantity. The total quantity of water is not known very accurately, but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers. Most of it is in the form of the salt water of the oceans about 97 percent. The rest is fresh, but three quarters of this is in the form of ice at the Poles and on mountains, and cannot be used by living systems until melted. Of the remaining fractional which is somewhat less than one per cent of the whole, there is 10—20 times as much stored underground water as t
A. in the center of the earth.
B. on the surface of our planet.
C. in a very narrow range of temperatures.
D. in the coastal areas of the earth.