问题 问答题

读亚洲地区图,回答下列问题.

(1)亚洲东面濒临______洋.

(2)写出图中字母与数码所代表的地理事物的名称:

山脉:①______,②______;

半岛:③______,④______;

岛屿:⑤______,⑥______;

河流:B______,E______;

平原:I______,J______.

(3)A、B、C三条河流注入______洋,D、E、F三条河流注入______洋,G、H两条河流注入______洋.可见,亚洲的河流呈______状由中部流向周边的海洋,这反映出亚洲大陆地势的特点是______.

(4)亚洲人口众多,请列举两个人口过亿的国家名称,并写出其首都名称.

答案

读图可知,图中①为乌拉尔山,②为喜马拉雅山,③为阿拉伯半岛,④为印度半岛,⑤为苏门答腊岛,⑥为台湾岛.A为鄂毕河,B为叶尼塞河,C为勒拿河,这三条河流自南向北注入北冰洋;D为黄河,E为长江,F为湄公河,这三条河流注入太平洋;G为恒河,H为印度河,这两条河流自北向南注入印度洋;从河流的流向可以看出亚洲地势中部高、四周低,河流由中部向四周呈放射状奔流入海.I为中国面积最大的平原--东北平原,J为亚洲面积最大的平原--西西伯利亚平原.亚洲有6个国家人口超过1亿,例如:中国首都是北京、印度首都是新德里.

故答案为:(1)太平;(2)乌拉尔山;喜马拉雅山;阿拉伯半岛;印度半岛;苏门答腊岛;台湾岛;叶尼塞河;长江;东北平原;西西伯利亚平原;(3)北冰;太平;印度;放射;中部高、四周低;(4)中国--北京、印度--新德里.

单项选择题

Passage Three

For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic and nationalistic (国家主义的). Columbus went west to look for better trade routes to the Orient and to promote the greater glory of Spain. Lewis and Clark journeyed into the American wilderness to find out what the U. S. had acquired when it purchased Louisiana, and the Appolo astronauts rocketed to the moon in a dramatic show of technological muscle during the cold war.
Although their missions blended commercial and political military imperatives, the explorers involved all accomplished some significant science simply by going where no scientists had gone before.
Today Mars looms (隐约出现) as humanity’s next great terra incognita (未探明之地). And with growing emphasis on international cooperation in large space ventures, it is clear that imperatives (需要,必要) other than profits or nationalism will have to compel human beings to leave their tracks on the planet’s reddish surface. Could it be that science, which has long played a minor role in exploration, is at last destined to take a leading role The question naturally invites a couple of others: Are there experiments that only humans could do on Mars Could those experiments provide insights profound enough to justify the expense of sending people across inter- planetary space
With Mars the scientific stakes are arguably higher than they have ever been. The issue of whether life ever existed on the planet, and whether it persists to this day, has been highlighted by mounting evidence that the Red Planet once had abundant stable, liquid water and by the continuing controversy over suggestions that bacterial fossils rode to Earth on a meteorite (陨石) from Mars. A more conclusive answer about life on Mars, past or present, would give researchers invaluable data about the range of conditions under which a planet can generate the complex chemistry that leads to life. If it could be established that life arose independently on Mars and Earth, the finding would provide the first concrete clues in one of the deepest mysteries in all of science: the prevalence of life in the universe.

At present, a probable inducement (诱因) for countries to initiate large scale space ventures is______.

A.international cooperation

B.nationalistic reasons

C.scientific research

D.long-term profits

单项选择题