15.Time is in the year 2095.It is reported that a comet(彗星) is rushing towards the Earth.Most of it will miss our earth,but two pieces will probably hit the southern half of our planet.
On 15July,a piece about four kilometers wide enters the Earth's atmosphere(大氣層) with a massive(巨大的) explosion(爆炸).About half of the piece is destroyed but the remaining part hits the South Atlantic at 200times the speed of sound.A hole is made in the sea bed.Huge waves spread outwards from the hole.The wall of water,a kilometer high,rushes towards southern Africa at 800kilometers an hour.Cities on the African coast are totally destroyed and millions of people are drowned(淹死).
Before the waves arrive in South America,the second piece of the comet hits Argentina.Earthquakes and volcanoes(火山爆發(fā)) are set off in the AndesMountains(安第斯山脈).The shock waves move north into California and all around the Pacific Ocean.The cities of Los Angeles,San Francisco and Tokyo are completely destroyed by earthquakes.Millions of people in the southern half of the earth are already dead,but the north won't escape it for long.Because of the explosions,the sun is hidden by clouds of dust(灰塵),temperatures around the world fall to almost zero.Crops are destroyed.The sun won't be seen again for many years.Wars break out as countries fight for food.A year later,no more than 10million people remain alive.
Could it really happen?In fact,it has already happened more than once in the history of the Earth.The dinosaurs were on the Earth for over 160million years.Then 65million years ago they suddenly disappeared.Many scientists believe that the Earth was hit by a piece of object in space.The dinosaurs couldn't live through the cold climate that followed and they died out.Will we meet the same end?
42.When the first piece hits the South Atlantic,it causesD.
A.an earthquake
B.volcanoes
C.an Earth explosion
D.huge waves
43.Why can't the northern half of the Earth escape the disaster for long?D
A.Because the land is covered-with water..
B.Because wars break out among countries for living space.
C.Because people there cannot live at the temperature of zero.
D.Because crops are destroyed,so people have little food to eat.
44.By giving the example of dinosaurs,the writer tries to proveC.
A.the human beings will die out
B.animals could not live in the cold climate
C.the Earth could be hit by other objects in space
D.what happened 65million years ago was an invented story
45.Which of the following can be the best title of this passage?B
A.A history discovery
B.An event of imagination
C.A research on space
D.A scientific adventure.
分析 文章大意:本文主要記敘的是想象的未來發(fā)生的一件事情,彗星碎片撞擊地球,引起海嘯和地震而導致人類遭受毀滅性的打擊.
解答 42-45 DDCB
42題答案:D 考查細節(jié)理解題,根據(jù)文中的第二段.Huge waves spread outwards from the hole可知當?shù)趬K彗星碎片撞擊地球之后,在海床上撞擊了一個大洞之后,引起了洶涌的海浪,故答案D
43題答案:D 考查細節(jié)理解題,根據(jù)文中的第三段Because of the explosions,the sun is hidden by clouds of dust(灰塵),temperatures around the world fall to almost zero.Crops are destroyed.The sun won't be seen again for many years.Wars break out as countries fight for food.A year later,no more than 10million people remain alive.由于爆炸,太陽隱藏在于塵霧中,世界各地的溫度下降到幾乎為零.莊稼被毀.太陽不會再看到.為糧食國家間爆發(fā)了戰(zhàn)爭.一年后,不超過1000萬人活著.可知ABC錯誤,故答案D
44題答案:C 考查細節(jié)理解題,根據(jù)文中的第四段The dinosaurs were on the Earth for over 160million years.Then 65million years ago they suddenly disappeared.Many scientists believe that the Earth was hit by a piece of object in space.The dinosaurs couldn't live through the cold climate that followed and they died out.Will we meet the same end?恐龍是在地球超過1億6000萬年.然后六千五百萬年前他們突然消失了.許多科學家認為,地球被一塊太空物體撞擊.恐龍不能生活在寒冷的氣候下,他們死了.我們會面臨同樣的結局?故答案C
45題答案:B 考查主旨題,根據(jù)文中的第四段The dinosaurs were on the Earth for over 160million years.Then 65million years ago they suddenly disappeared.Many scientists believe that the Earth was hit by a piece of object in space.The dinosaurs couldn't live through the cold climate that followed and they died out.Will we meet the same end?恐龍是在地球超過1億6000萬年.然后六千五百萬年前他們突然消失了.許多科學家認為,地球被一塊太空物體撞擊.恐龍不能生活在寒冷的氣候下,他們死了.我們會面臨同樣的結局?可知本文是一篇根據(jù)恐龍的滅絕的科學推斷而想象出的場景,故答案B
點評 題目涉及多道細節(jié)理解題,做題時結合原文和題目有針對 性找出相關語句進行仔細分析,結合選項選出正確答案.推理判斷也是要在抓住關鍵句子的基礎上合理的分析才能得出正確的答案.