10.Almost every machine with moving parts has wheels,yet no one knows exactiy when the first wheel was invented or what it was used for.we do know,however,that they existed over 5,500years ago in ancient Asia.
The oldest known.Transport wheel was discovered in 2002in slovenia.It is over 5.100years old.Evidence suggests that wheels for transport didn't become popular for a while,though.this couid be because animals did a perfectly good job of carrying farming tools and humans around.
But it could also be because of a difficult situation.while wheels need to roll on smooth surfaces,roads with smooth surfaces weren't going to be constructed until there was plenty of demand for them.Eventually,road surfaces did become smoother,butthis difficult situation appeared againa few centuries later.There had been no important changes in wheel and vehicle design before the arrival of modem road design.
In the mid-1700s,a Frenchman came up with a new design of road-a base layer(層)of large stones covered with a thin layer of smaller stones.A Scotsman improved on this design in the 1820s and a strong,lasting road surface became a reality.At amund the same time,metal hubs(the centrnl part of wheel)came into being,followed by theWheels were invented in 1967,sixty years after the appearance of tarmacked roads(泊油路).As wheel design took off,vehicles got faster and faster.
64.What might explain why transport wheels didn't become popular for some time?C
A.Few knew how to use transport wheels.
B.Humans carried farming tools just as well.
C.Animals were a good means of transport.
D.The existence of transport wheels was not known.
65.What do we know about road design from the passage?D
A.It was easier than wheel design.
B.It improved after big changes in vehicle design.
C.It was promoted by fast-moving vehicles.
D.It provided conditions for wheel design to develop.
66.How is the last paragraph mainly developed?C
A.By giving examples.
B.By making comparisons.
C.By following time order.
D.By making classifications.
67.What is the passage mainly about?B
A.The beginning of road deaign.
B.The development of transport wheels.
C.The history of public transport.
D.The invention of fast-moving vehicles.
分析 本文主要講述了最古老的運(yùn)輸沒有車輪,車輪的發(fā)展歷程以及道路設(shè)計(jì)對車輪發(fā)展的影響,作者通過這篇文章向我們介紹了車輪的發(fā)展以及運(yùn)輸?shù)陌l(fā)展經(jīng)過.
解答 64.C推理判斷題.根據(jù)第二段This could be because animals did a perfectly good job of carrying farming tools and humans around.這或許是因?yàn)閯游镌诶\(yùn)農(nóng)具人們的方面做得不錯.可知由于當(dāng)時動物使用的方便讓輪子沒能夠普及.故選C.
65.D推理判斷題.根據(jù)第3段 There had been no important changes in wheel and vehicle design before the arrival of modem road design.在現(xiàn)代道路設(shè)計(jì)之前,輪子和交通工具的設(shè)計(jì)都沒有重大變化,而第4段接著講述了隨著道路設(shè)計(jì)的進(jìn)步,各種新型的輪子隨之發(fā)展,而且也促進(jìn)了車輛的發(fā)展.由此可知,道路設(shè)計(jì)的發(fā)展促進(jìn)了車輪的發(fā)展.故選D.
66.C理解推斷題,由最后一段中的In the mid-1700s; in the 1820s;At amund the same time; in 1967;可知最后一段是按照時間順序?qū)懙,故選C.
67.B主旨大意題,通讀全文可知本文講述了車輪的發(fā)展歷程以及道路設(shè)計(jì)對車輪發(fā)展的影響,故選C.
點(diǎn)評 本文考察學(xué)生科教類閱讀的水平,同學(xué)們就要注意平時多讀科普知識類文章,學(xué)習(xí)科普知識,積累常見的科普詞匯,同時要根據(jù)題目中關(guān)鍵詞到文中尋找相應(yīng)答案.