Passage 1
【语篇导读】1911年,澳大利亚地质学家在南极洲的冰川中发现了一种奇怪的东西——血瀑布。众所周知,科学家一直无法找到血液中的红色液体不结冰的原因。直到最近,血瀑布的秘密终于被发现了。水中富含盐和铁,当水接触空气时,就会像铁锈一样变红,盐分很高,导致它不结冰。
1.According to the text,the red algae theory was once considered .
A.ridiculous B.reasonable
C.impractical D.complex
答案 B
解析 推理判断题。根据第三段第一句“This theory made sense,until it was later found that algae do not play a part in the red color of the flowing liquid at all.” 可知,这个理论一开始被认为是合理的,但后来发现海藻对于流动的液体呈红色不起作用。make sense“有道理,有意义,讲的通”,与reasonable同义。
2.Why do the Blood Falls look red in colour?
A.Because there is too much salt and iron in the water.
B.Because the liquid is rich in red algae.
C.Because the flowing liquid reflects red sunlight
D.Because the air is thin and rare in Antarctica.
答案 A
解析 细节理解题。根据第三段中的“The waters of the Blood Falls are rich in salt and iron content,and when this water comes in contact with the air,it turns red—just like rust!”可知,是因为水中富含盐分和铁,当水接触空气时,就会像铁锈一样变红。
3.What is the main reason for the Blood Falls’ not freezing?
A.The water continued flowing constantly.
B.There is too much salt in the water.
C.The brine gives off heat while freezing
D.Temperatures aren’t high enough for flowing water.
答案 C
解析 细节理解题。根据第五段中的“As a result of changing state from liquid to ice,the brine gives off heat.This heat is enough to keep the rest of the brine in liquid form,which is why it flows out of the glacier.”可知,当液态到冰态变化时,水放出热量。这种热量足以使其余的盐水保持液态,这就是不结冰的原因。
4.What is the passage mainly about?
A.The discovery of the blood glacier.
B.The birth of the Talor Glacier.
C.The flowing red water in Antarctica.
D.The mystery of the Blood Falls.
答案 D
解析 主旨大意题。通读全文可知,1911年澳大利亚地质学家在南极洲的冰川中发现了血瀑布。众所周知,科学家一直无法找到血液中的红色液体不结冰的原因。直到最近,血瀑布的秘密终于被发现了。分析选项可知,D项“血瀑布之谜。”符合题意。
【长难句分析】The waters of the Blood Falls are rich in salt and iron content,and when this water comes in contact with the air,it turns red—just like rust!
血瀑布中的水里含有丰富的盐和铁,当这种水与空气接触时,就会变成红色——就像生锈一样!
本句总体上是一个由and连接的并列句,在第二个分句中有一个when引导的时间状语从句。
Passage 2
【语篇导读】作者虽早年生活于一个很差的环境中,但在12岁时有了一个哈佛梦。从此在这个梦的驱使下,作者一直不断地努力学习,最终达到了自己的目标。作者要告诉我们的是即使贫穷也无法剥夺我们决定为自己选择人生的权力——你的选择决定了你是谁。
1.What does the first paragraph mainly tell us?
A.It describes the author’s early living conditions.
B.It proves that the author once lived an unhappy life.
C.It shows how many people treated the author badly.
D.It shares the author’s dream with readers.
答案 A
解析 段落大意题。根据第一段的介绍可知,作者描述了自己从小生活的环境,即早年的生活状况,因此通过分析可知A项符合题意。
2.What is the author’s attitude to the hardship?
A.Disappointed. B.Positive.
C.Thankful. D.Sorrowful.
答案 B
解析 推理判断题。通读全文可知,作者虽早年生活于一个很差的环境,在12岁时有了一个哈佛梦。从此在这个梦的驱使下,一直不断地努力学习,最终达到了自己的目标。所以作者是用一种积极的态度应对困境。
3.What did the author want to tell us most?
A.A famous university,a successful life.
B.The earlier you set yourself a goal,the better.
C.What doesn’t kill you makes you stronger.
D.Your choices determine who you are.
答案 D
解析 主旨大意题。根据最后一段中的 “Who you are today is the result of the decisions you made yesterday,and who you will be tomorrow will be the result of the choices you make today.”(你今天是谁,是你昨天做出的决定的结果,明天你将是谁,这将是你今天做出的选择的结果。)可知D项“你的选择决定了你是谁。”是最佳答案。
