Question

阅读理解 　　Mars is not, it seems the dry old planet we once believed it to be．Astronauts who are expected to go there in the next ten years may find plenty of water to get their thirst away．If there is water, it will be much more possible to find life on Mars． 　　This is the view of 40 geologists who have been analyzing thousands of pictures and other scientific information gained by robot explorers in the 1960s and 1970s． 　　At first scientists thought the red planet was as lifeless as the moon with dust storms blowing over the large sandy deserts．But now the picture is very different with mountains and valleys cut by glaciers(冰川)and rivers running deep underground． 　　In a report on the analysis of the Martian pictures Dr Michael Car of the US says,“ I believe there is lots of water on Mars．” Water will be in the form of ice．But it could save explorers from having to take water with them． 　　The report says that Mars probably had a warmer climate in ages past, because of its axis(轴线)having been more tilted(倾斜)towards the sun． 　　No convincing signs of plant or animal life have been found by instruments soft landed on Mars although only nearby area of landing instruments could be examined． (1) It was once believed that ________． [　　] A． Mars was a dry old planet B． Mars was a warm old planet C． Mars was an icy old planet D． Mars was full of water (2) The pictures of Mars were taken ________ in the 1960s and 1970s． [　　] A． by the astronauts B． by the scientists C． by robot explorers D． by the geologists (3) The Martian pictures show that ________． [　　] A． Mars is the same as the moon B． Mars has a warmer climate now C． there are glaciers and underground rivers on Mars D． there are signs of plants and animal life on Mars (4) Now we know that ________． [　　] A． the weather on Mars is hot B． there are dust storms on Mars C． Mars has large sandy deserts D． Mars has a colder climate (5) Explorers won’t need to take water with them because there is water ________ on Mars． [　　] A． in the underground B． in the form of ice C． examined by the landing instruments D． running through mountains and valleys

Answer 1

答案：1．A;2．C;3．C;4．D;5．B;
解析：

(1)	这是个细节理解题目，从文章第一段第一行“…not,it seems the dry old planet we once believed it to be．”可以断定A项为正确答案。
(2)	本题是细节理解题目，从文章第二段第二行可以得到做题信息。
(3)	从文章第三段可以得到信息。
(4)	反向理解，从文章倒数第二段“…had a warmer climate in ages past…”和本题发问的角度“Now we know…”从正相反的层面，双向理解，不难选出答案。
(5)	从文章倒数第三段可以找到信息。