题目内容
18.Seamounts are mountains,usually volcanoes,which rise up from the sea floor.Some of the volcanoes are dead,some are still active.But they are hard to fin because they do not reach the surface of the water.Scientists say seamounts cover more of the earth's area than deserts,tundra(冻原),or any other land-based habitats.Marine life gathers at seamounts because they carry nutrient-rich water upward form the sea floor.
In September,a group of scientists set out to explore Cook Seamount.It rises almost 4,000meters from the Pacific Ocean floor about 160 kilometers off the island or Hawaii,Humans have never seen it up close before.The Associated Press went with the scientists,and provided unique images and information about this seamount and the marine life around it.
Three people went in a submarine(潜艇)down to over 900meters below the ocean surface to the top of the seamount.As the blue waters became darker,underwater creatures that glow,by chemically creating their own light,began to swim past the submarine.The scientists dove below the level where sunlight can reach.They spotted some wonders-like a rare octopus(章鱼)with big fins that look like elephant ears.One even changed colors as it swam by the submarine.
Cook seamount is an extinct volcano,which means it is not active anymore.It is part of a group or undersea volcanoes known as the Geologist Seamounts,that are about 80 million years old and could hold many new animal species.They could also contain elements such as nickel and cobalt that mining companies could extract.
32.Why dose ocean life like gathering at seamounts?B
A.Because seamounts can protect them from being attacked.
B.Because there is plenty of food to feed.
C.Because there is plenty of air to breathe.
D.Because the rising water can bring them to ocean surface.
33.Form the fourth paragraph,we can infer thatD.
A.the deeper the ocean is,the bluer it is
B.the deeper the ocean is,the more sea creatures there are
C.octopuses live in the deep ocean where there id little sunlight
D.octopuses live in the deep ocean where there is little sunlight
34.What dose the underlined word"extinct"in paragraph 5 probably mean?C
A.positive
B.negative
C.dead
D.endangered
35.What passage is most likely taken fromB.
A.an adventure diary
B.a science exploration report
C.a science fiction
D.a social investigation podster.
分析 本文为说明文,主要介绍了位于深海底部的 seamounts 一些基本情况,如在海峰口 有大量的营养物质、还有很多矿物质等.
解答 BDCB
32.B 细节题.从第二段最后一句话Marine life gathers at seamounts because they carry nutrient-rich water upward form the sea floor.得知,海洋生物聚集在海峰处是因为那里有丰富的营养物质,故选B.
33.D 推断题.根据第四段As the blue waters became darker,underwater creatures that glow,by chemically creating their own light可知,随着蓝色海洋变得越来越黑,水下的生物能自动发光,所以这里生存的章鱼应该是位于海洋处阳光比较少的地方,故选D.
34.C 猜测次意思.根据which means it is not active anymore可知,an extinct volcano意思是一座灭绝的火山,即这是一座死火山,故选C.
35.B 推理题.根据第一段以及全文的内容可知,主要介绍了位于深海底部的 seamounts 一些基本情况,如在海峰口 有大量的营养物质、还有很多矿物质等,所以这样的文章应该是说明文,节选于一些报刊杂志的科学探险板块,故选B.
点评 考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.
练习册系列答案
相关题目
6.John was 20 years old.He was a handsome and gifted (21)C.But he stopped talking as much as he usually did after he graduated from high school.This year,his (22)Dreduced to nothing.His parents knew he was (23)A,and continually told him that they loved him.Everyone was(24)Dabout his well-being and wondered what they could say or do to help him,since saying"I love you"(25)Bwasn't enough to improve his situation.
John finally made a(an)(26)B.He locked himself in the cellar(地下室)and stayed there for three days without food.(27)Dhe continued to acknowledge his parents'love for him and his love for them,his depression(28)C.His loved ones were (29)Bthat he would even kill himself one day.Healthcare professionals were(30)A,but the advice,care and kindness did not (31)C.On the fourth day of John's isolation(隔离),the local high school football(32)A,who didn't'know John's situation,happened to call him.John's mother told him John was not(33)Dand took a message at the coach's(34)C.Then she went to the cellar door and called down the stairs,"John,Coach Ivers just phoned.He said that his players (35)Blast night on who they wanted as their assistant coach.They said you were the greatest football athlete they had ever had and they though they could (36)Athe state championship if you helped to coach them.Coach Ivers said they need you!He said if you are interested,you should be at the football practice(37)Aat 14:45this afternoon."Hearing the message,John eventually came out of the cellar.He accepted the coaching job.(38)Cthe time he came home from his first (39)B,he had walked out of his depression.He once again found the great feeling of being (40)D,and he was back to his old self.
John finally made a(an)(26)B.He locked himself in the cellar(地下室)and stayed there for three days without food.(27)Dhe continued to acknowledge his parents'love for him and his love for them,his depression(28)C.His loved ones were (29)Bthat he would even kill himself one day.Healthcare professionals were(30)A,but the advice,care and kindness did not (31)C.On the fourth day of John's isolation(隔离),the local high school football(32)A,who didn't'know John's situation,happened to call him.John's mother told him John was not(33)Dand took a message at the coach's(34)C.Then she went to the cellar door and called down the stairs,"John,Coach Ivers just phoned.He said that his players (35)Blast night on who they wanted as their assistant coach.They said you were the greatest football athlete they had ever had and they though they could (36)Athe state championship if you helped to coach them.Coach Ivers said they need you!He said if you are interested,you should be at the football practice(37)Aat 14:45this afternoon."Hearing the message,John eventually came out of the cellar.He accepted the coaching job.(38)Cthe time he came home from his first (39)B,he had walked out of his depression.He once again found the great feeling of being (40)D,and he was back to his old self.
21.A.judge | B.captain | C.athlete | D.professor |
22.A.promise | B.complaint | C.motivation | D.conversation |
23.A.depressed | B.awkward | C.innocent | D.unconscious |
24.A.curious | B.positive | C.frightened | D.concerned |
25.A.directly | B.obviously | C.properly | D.specially |
26.A.apology | B.move | C.difference | D.deal |
27.A.Because | B.When | C.Unless | D.Although |
28.A.acquired | B.recovered | C.deepened | D.withdrew |
29.A.amazed | B.convinced | C.bored | D confused |
30.A.brought in | B.taken in | C.turned in | D.put in |
31.A.solve | B.produce | C.work | D.develop |
32.A.coach | B.manager | C.assistant | D.guider |
33.A.occupied | B.suitable | C.flexible | D.available |
34.A.invitation | B.recommendation | C.request | D.compromise |
35.A.competed | B.voted | C.connected | D.responded |
36.A.obtain | B.recognize | C.approve | D.admit |
37.A.in person | B.with delight | C.by chance | D.on purpose |
38.A.During | B.Before | C.By | D.After |
39.A.appointment | B.practice | C.experience | D.preparation |
40.A.demanded | B.respected | C.protected | D.needed |