Question

2．1．Why do airplanes take longer to fly west than east？
It can take five hours to go west-east from New York （NY） to London but seven hours to travel east-west from London to NY．The reason for the difference is an atmospheric phenomenon known as the jet（噴射）stream．The jet stream is a very high altitude wind which always blows from the west to the east across the Atlantic．The planes moving at a constant air speed thus go faster in the west-east direction when they are moving with the wind than in the opposite direction．
2．What would happen if the gravity on Earth was suddenly turned off？
Supposing we could magically turn off gravity．Would buildings and other structures（建筑物）float away？What happened would depend on how strongly the things were attached to the Earth．The Earth is moving at quite a speed，moving at over a thousand miles per hour．If you turn something around your head on a string（細繩），it goes around in a circle until you let go of the string．Then it flies off in a straight line．‘Switching off'gravity would be like letting go of the string．Things not attached to the Earth would fly off in a straight line．People in buildings would suddenly shootupwards at a great speed until they hit the ceiling．Most things outside would fly off into space．

60．What information can we get from the first passage？A
A．It is the jet stream that affects how fast airplanes fly．
B．Planes go slower when they are moving with the wind．
C．It takes more time to fly from NY to London than from London to NY．
D．The jet stream always blows from the east to the west across the Atlantic．
61．The word"shoot"underlined in the 2^nd passage probably means"B"．
A．send for                                         
B．move quickly
C．come out                                        
D．grow quickly
62．It can be inferred that without gravityB．
A．buildings and other structures would float away
B．trees and buildings would not so easily fly off
C．something around your head would not float away
D．everything outside buildings would fly off into space
63．Where can we most probably read this text？D
A．In a research paper．
B．In a short story．
C．In a travel magazine．
D．In a student's book．

Answer 1

分析 本文是科普說明文，主要介紹了飛機為什么向西面飛比向東面飛花的時間更長的原因是氣流的方向．從紐約飛往倫敦要花5個小時，而從倫敦飛往紐約則要花7小時．花費時間不同的原因大氣現象，噴射氣流是一個高空風，這種噴射氣流總是穿過太平洋上空從西往東吹．還介紹了沒有了地球引力會發(fā)生什么．地球以一種極快的速度移動，一個小時會移動超過1000英里，地球引力消失就會像松開甩動的細繩一樣，在建筑里的人們將會突然以一種極快的速度被發(fā)射出去，直到撞到天花板．許多外面的東西都將飛進太空．

解答 60．A  歸納總結題．根據短文第一段"The planes moving at a constant air speed thus go faster in the west-east direction when they are moving with the wind than in the opposite direction"主要講述了飛機為什么向西面飛比向東面飛花的時間更長的原因是氣流的方向，故選A．
61．B  詞意猜測題．根據第二段"People in buildings would suddenly shootupwards at a great speed until they hit the ceiling （="top"surface of a room）．Most things outside would fly off into space．"描述在建筑里的人會突然以一個巨大的速度向上移動直到他們撞上天花板．很多東西會飛到外太空．故選B．
62．B   推理判斷題．根據第三段"What happened would depend on （依靠） how strongly the things were attached （吸附） to the earth．"描述發(fā)生了什么將取決于東西連接到地球上有多結實．再根據后面描述"Then it flies off in a straight line．‘Switching off'gravity would be like letting go of the string．Things not attached to the Earth would fly off in a straight line"可知，樹以及建筑不像其他物品那樣容易飛出．故選B．
63．D   文章出處．根據四個選項，A項，研究論文，B項小故事，C項旅游雜志，D項學生課本，這是一篇科普短文，有可能來自學生課本，故選D．

點評 解答細節(jié)理解題時，一個常用的方法就是運用定位法，即根據題干和選項中的關鍵詞從原文中找到相關的句子，與選項進行比較從而確定答案；推理判斷題既要求學生透過文章表面文字信息推測文章隱含意思，又要求學生對作者的態(tài)度、意圖及文章細節(jié)的發(fā)展作正確的推理判斷，力求從作者的角度去考慮，不要固守自己的看法或觀點．