10.Dragging a sleigh loaded with enough presents for the world's children can be no easy skill.But,since ancient times,the Christmas Eve duty has been performed with distinction by a team of beloved reindeer(馴鹿).
Soon,however,Santa Claus may have to start looking around for a stronger type of animal,as a new research shows the species is becoming increasingly puny.A 16-vear survey on the arctic Norwegian island of Svalbard found the reindeer there have declined in weight by an alarming 12 percent.
The reduction in average body-mass is being blamed on global warming.In the research presented lately at a meeting of the British Ecological Society in Liverpool,scientists have explained how rising temperatures are robbing female reindeer of nutrients during important periods of pregnancy.a(chǎn)re becoming starved,causing them to abort their babies or giving birth to much lighter young.
Snow in Svalbard typically covers the ground for eight months of the year,which,combined with low temperatures,limits grass growth to June and July.But as summer temperatures have increased by around 1.5°C,grass has become more productive,allowing female reindeer to gain more weight by the autumn and therefore to have more babies.However,wanner winters have brought with them greater rainfall which freezes when it settles on the snow.Reindeer can often access the poor food sources beneath the snow by clearing it away with their antlers(鹿角),but they cannot break through the hard ice.As a result,female reindeer are becoming starved,causing them to abort their babies or giving birth to much lighter young.
Despite the findings,reindeer appear to be suffering less from the effect of climate change than some other arctic species.Last week the scientists warned that a third of the world's polar bears could disappear in the next 40 years.

32.Which of the following can replace the underlined word"puny"in Paragraph 2?D
A.strong B.mature C.heavy D.weak
33.Why do female reindeer become fat in autumn?C
A.The temperature is getting low.
B.They give birth to more babies.
C.Grass has grown well since summer.
D.They often break through the hard ice.
34.What can we infer from the text?B
A.Climate change has little effect on reindeer.
B.Polar bears suffer more from climate change.
C.Reindeer have no trouble finding food in winter.
D.Polar bears will disappear in the near future.
35.What does the text mainly talk about?B
A.The Christmas Eve duty will still be carried out by reindeer.
B.Reindeer has decreased in weight owing to global warming.
C.Global warming contributes to more young reindeer.
D.Many arctic species are at the risk of dying out.

分析 文章講述了由于受到全球氣候變化的影響,負(fù)責(zé)拉雪橇的馴鹿也受到很大的影響,圣誕老人開(kāi)始尋找更強(qiáng)壯的動(dòng)物來(lái)代替.

解答 DCBB
32.D 猜測(cè)詞意題.根據(jù)Santa Claus may have to start looking around for a stronger type of animal可知,圣誕老人正在尋找一種更強(qiáng)壯的動(dòng)物來(lái)拉雪橇,可見(jiàn)puny意思是說(shuō)reindeer變得越來(lái)越虛弱,故答案為D.
33.C  細(xì)節(jié)題.根據(jù)grass has become more productive,allowing female reindeer to gain more weight by the autumn and therefore to have more babies可知,草越來(lái)越多,結(jié)果讓雌性馴鹿體重越來(lái)越重,故答案為C.
34.B 推理題.根據(jù)最后一句話(huà).Last week the scientists warned that a third of the world's polar bears could disappear in the next 40 years.可知,在未來(lái)的40年,北極熊可能會(huì)滅絕,故答案為B.
35.B 主旨大意題.根據(jù)第一段可知,每年的拉雪橇任務(wù)都有馴鹿來(lái)完成,但是圣誕老人開(kāi)始尋找更強(qiáng)壯的動(dòng)物,因?yàn)轳Z鹿由于全球氣候的影響,越來(lái)越受到影響,故答案為B.

點(diǎn)評(píng) 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力,做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確的選擇.在做推理判斷題不要以個(gè)人的主觀(guān)想象代替文章的事實(shí),要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷

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