2013年職稱英語綜合類B級完形填空模擬試題(10)

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Less Is More

　　It sounds all wrong--drilling holes in a piece of wood to make it more resistant to knocks.But it works because the energy from the blow gets distributed throughout the wood rather than focusing on one weak spot.The discovery should lead to more effective and lighter packaging materials. Carpenters have known ________(51)centuries that some woods are tougher than others.Hickory(山核桃木)，for example，was turned into axe handles and cartwheel spokes(輪輻)because it Can absorb shocks without breaking.White oak，for example，is much more easily

　　damaged，_________ (52)it is almost as dense.Julian Vincent at Bathe University and his team were convinced the wood’s internal structure could explain the differences.

　　Many trees have tubular(管的)vessels that run _________ (53)the trunk and carry water to the leaves.In oak they are large，and arranged in narrow bands，but in hickory they are smaller，and more evenly distributed.The researchers _________ (54)this layout might distribute a blow’s energy throughout the wood.soaking up a bigger hit.To test the idea，they drilled holes 0.65 millimetres across into a block of spruce(云杉)，a wood with _________ (55)vessels，and found that _________ (56)withstood a harder knock._________ (57)when there were more than about 30 holes per square centimetre did the wood’s performance drop off.

　　A uniform substance doesn’t cope well with knocks because only a small proportion of the material is actually _________ (58).All the energy from the blow goes towards breaking the material in one or two places，but often the pieces left _________ (59)are pristine(未經(jīng)破壞的).

　　But instead of the energy being concentrated in one place，the holes provide many weak spots that all absorb energy as they break，says Vincent.“You are controlling the places_________ (60)the wood breaks，and it can then absorb more _________ (61)，more safely.”The researchers believe the principle could be applied to any material- _________ (62)example.to manufacture lighter and more protective packaging.It could _________ (63)be used in Car bumpers，crash barriers and armour for military vehicles，says Ulrike Wegst， _________ (64)the Max Plank Institute for Mental Research in Stuttgart.But she emphasizes that you _________ (65)to design the substance with the direction of force in mind.“The direction of loading is crucial，”she says.

　　51 A in B since C for D at

　　52 A or B although C and D despite

　　53 A down B over C up D into

　　54 A knew B concluded C saw D thought

　　55 A no B per C each D every

　　56 A it B the idea C they D spruce

　　57 A if B Just C Only D Rarely

　　58 A effected B beaten C slapped D affected

　　59 A behind B beyond C for D in

　　60 A which B there C that D where

　　61 A water B air C energy D safety

　　62 A among B in C as D for

　　63 A also B besides C else D yet

　　64 A over B at C around D on

　　65 A have B must C should D had

　　參考答案：

　　51.答案為C for centuries表示幾個(gè)世紀(jì)以來，注意在用現(xiàn)在完成時(shí)的句子里for后面跟一段時(shí)間，since后面跟一點(diǎn)時(shí)間。

　　52.答案為B 這里需要一個(gè)連接詞，但要表達(dá)“雖然”這樣的讓步意義。

　　53.答案為c 樹葉在樹的上部，所以在樹干里把水分送到樹葉里去的管道應(yīng)該說是run up the trunk，而不是run down the trunk。

　　54.答案為D 這里所說的僅僅是一個(gè)假設(shè)，注意情態(tài)動(dòng)詞might，表示這還僅僅是一種可能，后面說要對此進(jìn)行test。

　　55.答案為A 除了no，其他幾個(gè)選項(xiàng)根本不可能用在這里。

　　56.答案為A 這里需要一個(gè)單數(shù)的代詞，代替spruce或者the wood。

　　57.答案為C Only放在when從句前面起強(qiáng)調(diào)作用，表示“只有當(dāng)……時(shí)”，注意后面的句子是倒裝的，就是因?yàn)橛昧薕nly的要求。

　　58.答案為D‘ affected受到影響，effect(效力，生效)在詞形上容易和affect混淆。beat(打)，slap(打耳光)在這里毫不相干。

　　59.答案為A to be left behind是“被留下”的意思，又如：Those who were left behind were soon found bv the enemy.留下來的那些人很快就被敵人發(fā)現(xiàn)了。

　　60.答案為D 這里填入的是一個(gè)引導(dǎo)定語從句的連接詞，因?yàn)橄刃性~是places，所以應(yīng)該選where。61.答案為C 這里都在講能量的吸收，很自然這里應(yīng)該填入energy。

　　62.答案為D for example(例如)，是個(gè)十分普通的固定的表達(dá)方式。

　　63.答案為A “也能用于……”，只有also可以考慮。

　　64.答案為B 表示在某個(gè)單位或機(jī)構(gòu)任職用at。

　　65.答案為A 后面有to，所以不可能用must或should，have to表示“必須，不得不”。

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