- 相關(guān)推薦
2016年職稱英語(yǔ)考試真題及答案理工類B級(jí)完形填空
2017年職稱英語(yǔ)考試復(fù)習(xí)已經(jīng)開(kāi)始，為了讓大家了解職稱英語(yǔ)考試難易程度，下面yjbys網(wǎng)小編為大家提供了職稱英語(yǔ)歷年考試真題及答案詳解，以下是2016年職稱英語(yǔ)考試真題及答案理工類B級(jí)完形填空。
完形填空
Warmer Climate Will Bake TropicalBugs
Globalwarming could cook tropical insects, with unpredictable knock-on effects, sayresearchers who warn that rising temperatures also______(51) tropical frogs,lizards (蜥蜴).
Temperaturesare ______ (52) to increase much faster in temperate(溫和的) andpolar(極地的)regions than in the tropics. But no-one had looked at how warming would affectinsects and other cold-blooded animals ______ (53) had evolved in tropicalregions with little temperature variation.
CurtisDeutsch at the University of California at Los Angeles and colleagues analyseddata ______ (54) insect survival and reproduction for 38 species in differentecosystems(生態(tài)系統(tǒng)), andthen estimated how these values would ______ (55) with predictions of climatechange for the 21st century.
Theteam found that the reproductive ______ (56) of tropical insects tends to peakvery close to the temperatures where they normally live, but______ (57) sharplyat higher temperatures. This means that cranking up (提高)theheat only a small amount can exert a heavy toll, leaving insects unable toreproduce ______ (58) enough to keep up their numbers.
Temperaturetolerance
Temperateinsects reproduce well over a broader range, and do not live as ______ (59) totheir thermal(熱的)limit, so they can reproduce successfully when their climate warms more than inthe tropics.
“Tropicalinsects do very well in a narrow band of temperatures, but move them above that______ (60) and they die,” says team member Josh Tewksbury of the University ofWashington in Seattle.
Theheart of the ______ (61) is temperature tolerance. emperate-zone insects haveevolved to survive the much broader temperature swings of seasonal climates,than have their tropical relatives.
The______ (62) appears worse for animals that live in hot stable climate of thelower levels of tropical forests. Lizards in clear areas can find shade to cooldown, but those living in the forest are already in the ______ (63), andthere's not much they can do to get cooler, Deutsch says.
Too fewtropical insects have been studied so far to ______ (64) if any particulargroup will be particularly hard-hit, says Tewksbury. Insects play important______ (65) in forest ecology(生態(tài)學(xué)), including pollination, and eatingdetritus to recycle carbon.
Theteam are now starting to evaluate how temperature affects ecologicalinteractions of insects with other species, including crops such as Africancorn.
參考答案：
51 threaten 52 expected 53 that 54 on 55 change
56 rate 57 drops 58 sucessfully 59 close 60 range
61 problem 62: effect 63 shade 64 tell 65 roles
【職稱英語(yǔ)考試真題及答案理工類B級(jí)完形填空】相關(guān)文章：
2016職稱英語(yǔ)理工類B級(jí)考試真題答案09-22
2015職稱英語(yǔ)理工類B級(jí)考試真題及答案08-07
2015職稱英語(yǔ)理工類B級(jí)閱讀理解真題及答案08-12
2016年職稱英語(yǔ)考試?yán)砉ゎ怋級(jí)預(yù)測(cè)題(含答案)09-03
2015職稱英語(yǔ)理工類B級(jí)考試真題10-13
2016職稱英語(yǔ)理工類b級(jí)預(yù)測(cè)題及答案09-20
2017年職稱英語(yǔ)b真題答案10-11
2017年職稱英語(yǔ)b真題及答案05-23