1．It's easy to see how the sawfish got its name．These frightful creatures can grow to be more than 6 meters （nearly 20 feet） long．Their bodies are flat and winged，like underwater airplanes．And their noses are shaped like chainsaws．
Sawfish are predators of the sea．When a sawfish is hungry，it waves its sharp-toothed snout through a school of fish．Then，it lifts its nose and uses its mouth to inhale the injured victims．
Hardy populations of sawfish thrived in warm waters along coastlines around the world for thousands of years．Over the past 200 years，however，human actions have severely endangered sawfish．
Threats include fishing nets that snag the huge animals，often by mistake．Compared with other fish，sawfish reproduce late in life and at slow rates．These traits make it hard for them to recover from over fishing．
Some people collect sawfish snouts as trophies：One snout recently sold for nearly $1，600 on eBay．Shamans，or priests，in some Asian cultures，use the toothy snouts in ceremonies to repel demons and disease．And sawfish are also a delicacy．A growing demand in Asia for the animal's fins for a pricey soup has contributed to the fish's disappearance．
New efforts now aim to revive sawfish populations．Beginning next month，an international agreement will provide protection for all seven of the world's sawfish species．
"Until 1998，this fish had never been formally studied in the United States，"says Tonya Wiley of the Mote Marine Laboratory in Sarasota，F(xiàn)la．"We didn't know such basic things as where they live，what habitat they use，how often they reproduce，how many young fish they have．"
Through historical studies and field research，scientists have become aware of how much the fish's numbers have dwindled．Today，there may be 90 percent fewer sawfish than there used to be．Wiley estimates that only 3，000 to 6，000 sawfish remain in US waters．
72．Which of the following is the best title for the passage？A
A．Long Nose，Hopeful Future B．The Mote Marine Laboratory
C．Sawfish in US D．The Past of the Sawfish
73．The sawfish got its name becauseC．
A．It can grow to be more than 6 meters long
B．Its body is flat and winged，like underwater airplanes
C．Its nose is shaped like chainsaws
D．It can be used as a saw to cut down the trees
74．The number of sawfish becomes smaller than before becauseB．
A．compared with other fish，sawfish reproduce early in life and at fast rates
B．in some Asian cultures，the toothy snouts can be used in ceremonies to repel demons and disease
C．sawfish are also smelly，which attracts people to kill them
D．fishing nets that snag the huge animals，often on purpose kill them
75．From the passage we can learn thatC．
A．scientists knew where they live，what habitat they use before 1998
B．scientists have become aware of how much the fish's numbers have dwindled until 1998
C．there may be 30，000 to 60，000 sawfish in the past
D．there may be 90 percent more sawfish than there used to be．
分析 文章主要介紹了Sawfish所面臨的滅絕的危險，文章分析了具體的原因以及人們現(xiàn)在所采取的措施．因此一項國際協(xié)定將向世界上所有七個種類的鋸鰩提供防護(hù)．
解答 72． A 主旨大意題． 根據(jù)文章內(nèi)容，主要講述了Sawfish所面臨的危險，但是由于人們的措施，它在未來有可會得到很好的保護(hù)．their noses are shaped like chainsaws，他們的鼻子像鏈鋸，相對比較長，結(jié)合選項，A就能概括出該文章的大意．有著長長鼻子的Sawfish，有著光明的未來．
73．C 細(xì)節(jié)理解題．根據(jù)文章These frightful creatures can grow to be more than 6 meters （nearly 20 feet） long．And their noses are shaped like chainsaws由此可知，這種生物身體會長很長，并且尤其鼻子長的像鏈鋸，由此得到了鋸鰩這個稱呼，故選C．
74．B 細(xì)節(jié)理解題． 根據(jù)文章內(nèi)容in some Asian cultures，use the toothy snouts in ceremonies to repel demons and disease以及A growing demand in Asia for the animal's fins for a pricey soup has contributed to the fish's disappearance 在亞洲，人們在祭祀時用它們的嘴來擊退惡魔和疾病，并且食用他們的鰭等原因使得這種動物消失了，結(jié)合選項，答案為B．
75．C 細(xì)節(jié)理解題．根據(jù)文章最后一段的表述，Wiley estimates that only 3，000 to 6，000 sawfish remain in US waters可知Wiley 估計，在美國所剩的鋸鰩的數(shù)量為3000到6000條．結(jié)合選項，故答案為C．
點評 本文是人文地理類閱讀理解．做這類題材閱讀理解時要求考生對文章通讀一遍，做題時結(jié)合原文和題目有針對性的找出相關(guān)語句進(jìn)行仔細(xì)分析，結(jié)合選項選出正確答案．推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案，切忌胡亂猜測，一定要做到有理有據(jù)．
