职称英语理工A完型试题剖析

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职称英语理工A完型试题剖析

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职称英语理工A完型试题剖析

　　Avalanche and Its Safety

　　An avalanche is a sudden and rapid flow of snow, often mixed with air and water, down a mountainside. Avalanches are 1 the biggest dangers in the mountains for both life and property.

　　All avalanches are caused by an over-burden of material, typically snowpack, that is too massive and unstable for the slope 2 supports it. Determining the critical load, the amount of over-burden which is 3 an avalanche, 4 a complex task involving the evaluation of a number of factors.

　　Terrain slopes flatter than 25 degrees or steeper than 60 degrees typically have a low 5 of avalanche. Snow does not 6 significantly on steep slopes; also, snow does not 7 easily on fiat slopes. Human-triggered avalanches have the greatest incidence when the snow's angle of rest1 is 8 35 and 45 degrees; the critical angle, the angle at which the human incidence of avalanches is greatest, is 38 degrees. The rule of thumb2 is: A slope that is 9 enough to hold snow but steep enough to ski has the potential to generate an avalanche, regardless of the angle. Additionally3, avalanche risk increases with 10 ; that is, the more a slope is disturbed by skiers, the more likely it is that an avalanche will occur.

　　Due to the complexity of the subject, winter travelling in the backcountry4 is never 100% safe. Good avalanche safety is a continuous 11 , including route selection and examination to the snowpack, weather 12 , and human factors. Several well-known good habits can also 13 the risk. If local authorities issue avalanche risk reports, they should be considered and all warnings should be paid 14 to. Never follow in the tracks of others without your own evaluations; snow conditions are almost certain to have changed since they were made. Observe the terrain and note obvious avalanche paths where plants are 15 or damaged. Avoid traveling below others who might trigger an avalanche.

　　1.angle of rest：这里指积雪坚持运动的角度。

　　2.rule of.thumb：指“a broadly accurate principle，based on experience or practice rather that theory”，即“通用法例，经历法例 ”。

　　3.Additionally：是一个副词，用来惹人新的现实或论点，意为 “另外”。

　　4.backcountry：火食希少的地域。

　　操练:

　　1. A among B of C to D in

　　2. A when B that C who D whose

　　3. A mostly B likely C clearly D surely

　　4. A are B will be C is D was

　　5. A weight B form C risk D work

　　6. A fall B flow C roll D gather

　　7. A fall B flow C roll D gather

　　8. A among B between C with D for

　　9. A thick B thin C flat D rocky

　　10. A use B time C snow D rain

　　11. A journey B trip C fact D process

　　12. A conditions B reports C forecast D event

　　13. A increase B reduce C improve D remove

　　14. A price B effort C attention D money

　　15. A missing B grown C big D fresh

　　谜底与题解：

　　1.A抒发“雪崩是山上能够产生的昀大风险之一 ”的意义，是以应当挑选 among(在……当中)。

　　2.B从该句的语法布局下去看，此处须要一个干系代词，取代 slope，以是 that是昀佳挑选。选项 A、C、D均分歧适语法。

　　3.B选项 A分歧适语法， C和 D合适语法，但分歧适知识：过分的雪的积存能够致使雪崩，而不是肯定致使雪崩。以是， B是昀佳谜底。

　　4.C该句的主语是 Determining the critical load，从高低文来看应当利用普通此刻时，以是 C是准确谜底。

　　5.C要肯定本题谜底的一个有用的方式是解除法。 a low weight/form work of avalanche都分歧逻辑，只要 a low risk of avalanche合适高低文的意义。上面的句子诠释了 low risk of avalanche的事理，更证明了选 risk是准确的。

　　6.D第 6和第 7题能够一路斟酌。全部句子的意义是：在坡度大的坡上，雪不会大批聚积。在较为平展的坡面，雪不会等闲滑动。

　　7.B(见 6)

　　8.B懂得了句子的意义就不难判定选项：雪在运动状况下，角度在 35～45度之间，昀能够产生报酬触发的雪崩。between：在……之间。

　　9.C这个句子申明的是甚么样的山坡昀易产生雪崩，即，A slope that is flat enough to hold snow but steep enough to ski。flat在此做 “平展”解，与前面的 steep构成反义。

　　10.A句中的 that is标明，后半局部是对前半局部的进一步申明。以是，这里的.挑选要按照下文的意义判定。

　　use是昀佳挑选，全部句子的意义是：山坡被滑雪者利用的越多，雪崩就越能够产生。

　　11.D虽然选项 A、B和 D都能和 continuous搭配，从全段的内容判定，只要 process是昀佳挑选，由于该段描述的是若何防范雪崩，及若何做好宁静办法等一系列题目。

　　12.A选项 A、B、C都能够与 weather搭配，可是按照高低文，只要 A昀为合适文章的内容。

　　13.B选项 A分歧适句子的意义; C不能和 risk搭配;D也分歧适句子的意义，由于不能够完整消弭雪崩的隐患。

　　14.C该句主句利用的是主动语态，第二个动词是 pay attention to的主动情势。选项 A、B、D均分歧适句子的意义。

　　15.A该句是作者给出的一系列忠言之一，即，当真察看地形，注重较着的雪崩途径，不动物或动物被损坏的处所。选项 B、C、D均分歧适句义。

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