[請益]黃金閱讀第34(恐龍滅絕)和35篇(火星上的水)
第34篇 Extinction of the Dinosaurs
Paragraph 4:Dissatisfaction with conventional explanations for dinosaur
extinctions led to a surprising observation that, in turn, has suggested a
new hypothesis. Many plants and animals disappear abruptly from the fossil
record as one moves from layers of rock documenting the end of the Cretaceous
up into rocks representing the beginning of the Cenozoic (the era after the
Mesozoic). Between the last layer of Cretaceous rock and the first layer of
Cenozoic rock, there is often a thin layer of clay. Scientists felt that they
could get an idea of how long the extinctions took by determining how long it
took to deposit this one centimeter of clay and they thought they could
determine the time it took to deposit the clay by determining the amount of
the element iridium (lr) it contained.
Q8
In paragraph 4, all the following questions are answered EXCEPT:
○Why is there a layer of clay between the rocks of the Cretaceous and
Cenozoic?
○Why were scientists interested in determining how long it took to deposit
the layer of clay at the end of the Cretaceous?
○What was the effect of the surprising observation scientists made?
○Why did scientists want more information about the dinosaur extinctions at
the end of the Cretaceous?
答案是A，可是我選C...Orz
我的理由是，A選項文章有說clay是從沈積而來，B有說可以藉此瞭解恐龍滅絕所花的時
間，D有說因為對傳統解釋不滿意....
而C，這一段還沒說到這個發現會有什麼影響吧?文章只說可能可以藉著這個clay推測滅
絕所花的時間...到底能不能產生什麼關鍵性的影響還沒提到....
Running water on Mars
Paragraph 3:Some scientists speculate that Mars may have enjoyed an extended
early Period during which rivers, lakes, and perhaps even oceans adorned its
surface. A 2003 Mars Global Surveyor image shows what mission specialists think
may be a delta─a fan-shaped network of channels and sediments where a river
once flowed into a larger body of water, in this case a lake filling a crater
in the southern highlands. Other researchers go even further, suggesting that
the data provide evidence for large open expenses of water on the early Martian
surface. A computer-generated view of the Martian north polar region shows the
extent of what may have been an ancient ocean covering much of the northern
lowlands. The Hellas Basin, which measures some 3,000 kilometers across and has
a floor that lies nearly 9 kilometers below the basin’s rim, is another
candidate for an ancient Martian sea.
Q7
All of the following questions about geological features on Mars are answered
in paragraph 3 EXCEPT:
○What are some regions of Mars that may have once been covered with an
ocean?
○Where do mission scientists believe that the river forming the delta emptied?
○Approximately how many craters on Mars do mission scientists believe may once
have been lakes filled with water?
○During what period of Mars’ history do some scientists think it may have had
large bodies of water?
答案是C，我選擇D....Orz
我的理由是，A選項文章有說火星北極區和Hellas Basin有可能以前是海，B選項有提到
是一個southern highlands的火山口所形成的湖泊，C選項文章有提到目前至少一個，
D選項文章只有提到說火星以前可能有大量的水，但是沒提到什麼時候(what period)吧?
更遑論Mar's history....壓根沒找到 囧b
唉，遇到這種"which question is or is not answered in the paragraph"這種題目
實在很苦手，不但段落要重看，選半天錯誤的機會還是很高 Orz
請問版上眾位高手，有沒有什麼竅門或技巧哇 囧rz
比如說插入句問題，可以靠代名詞單複數或副詞(however,furthermore...etc)來協助
刪去一些選項之類....
謝謝看完 <囧
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