2.For a long time,humans have used technology (科技) to study the world around us,and Mars is the latest place we're using machines to explore.Besides the earth,the"red planet"is seen,as the one place in our solar system most likely to have life.
Early last month,the first American robot,Spirit,landed on Mars without any problem.Opportunity,the second robot,landed on the planet more than a week ago.Scientists are very excited about these machines'safe landing on Mars.It means that now we have an excellent chance to look for water and other signs of life.So far,the robots have found some stones that could show Mars was once a wet and warm planet.
But the trips made by Spirit and Opportunity were dangerous.Mars is often called the"death planet",because in the past its environment has been unfriendly to the robot explorers.Before Spirit and Opportunity,nearly forty spaceships had been sent to Mars since the 1960s.Two-thirds of them failed.The first spaceship,Korabl,sent in 1962by Russia was among them.It broke apart (分裂) near the earth.
28.For a long time humans thinkB.
A.they can surely find life on Mars
B.there may be life on Mars
C.it's too late for them to explore Mars now
D.Mars is the only planet that has life on it
29.The two robotsC.
A.have found out that it is warm and wet on Mars
B.were sent to Mars to find some stones
C.were the first two American robots that landed on Mars
D.a(chǎn)re the only machines that have landed on Mars so far
30.The third paragraph mainly tell usA.
A.it's a very hard and dangerous trip for spaceships to Mars
B.two-thirds of the spaceships sent to Mars have failed
C.Spirit and Opportunity landed on Mars successful
D.Mars is called the"death planet"
分析 短文主要講了人類對我們周圍的空間進行勘測.除了地球之外,"紅色星球"被視為太陽系中最有可能有生命的地方.美國第一機器人和第二機器人,相繼登上了火星,但火星之旅很危險.火星通常被稱為"死亡之星".
解答 答案:28.B 細節(jié)理解題.根據(jù)第一段第一行句子For a long time,humans have used technology (科技) to study the world around us,and Mars is the latest place as the one place in our solar system most likely to have life.很長一段時間以來,人類都用科技來研究我們周圍的世界,火星是最有可能有生命的太陽系的一個地方.故選B.
29.C 細節(jié)理解題.根據(jù)第二段第一行句子Scientists are very excited about these machines'safe landing on Mars.科學(xué)家們對這些美國機器人成功登陸火星很興奮.故C.
30.A 細節(jié)歸納題.根據(jù)第三段第一行句子But the trips made by Spirit and Opportunity were dangerous.但由火星探測漫游者制造的旅行是危險的.及整個第三段的內(nèi)容可知主要講述了這兩個機器人在火星上的旅行是危險的.故選A.
點評 在通讀全文的基礎(chǔ)上,根據(jù)全文大意,展開邏輯思維,瞻前顧后,認真觀察選項,仔細推敲,確定最佳答案.