18.Four Wild Animal Species Were Endangered
Maybe you can still see them at the zoo.But that doesn't mean they're doing alright in the wild.
Tigers
All six tiger species are endangered,with Suatran tigers and South China tigers at a seriously endangered status.The main reasons for their population decline are illegal hunting and destroyed habitats,as humans clear forests to gather timber and build roadways.Only about 3890tigers presently live in the wild.
Ground squirrels
That's right,even squirrels are endangered,specifically the San Joaquin ground squirrel.Native to California,USA,these guys have been disappearing since 1979on account of the construction and human developments going through their habitat.Their total population is unknown,but it could be anywhere between 124000 and 4130000.
Giraffes
The International Union for the Conservation of Nature recently put giraffes at a vulnerable status,the level just before endangered.The giraffe population has declined 40percent in the last 30years,primarily due to loss of habitat and illegal hunting.Some giraffes are killed just for their tails,which are considered status symbols in Africa.
Asian elephants
The main threat to Asian elephants,one of the most intelligent animals,is their shrinking habitat.As the human population grows,people invade their land to build roads and railway tracks.Elephants in Myanmar are at an especially high risk for being captured and traded or used illegally in the tourist industry.Fewer than 50000 are left on the entire continent.
21.What is the total population of tigers living in the wild?B
A.50000.B.Around 3890.C.124000.D.413000.
22.Which of the following is considered one of the most intelligent animals?D
A.Tigers.B.Giraffes.C.Ground squirrels.D.Asian elephants.
23.What is the common threat to the four wild animals?B
A.Illegal hunting.
B.Disturbed habitat.
C.Developing tourism.
D.Unnecessary construction.
24.Which word can best describe the present situation for protecting wild animals?A
A.Urgent.B.Optimistic.C.SatisfactoryD.Stable.

分析 本文主要講述了四種野生動物瀕臨滅絕的現(xiàn)狀和原因.

解答 21.B 細節(jié)理解題.根據(jù)句子Only about 3890 tigers presently live in the wild.目前大約只有3890只老虎生活在野外.所以答案選B.
22.D 細節(jié)理解題.根據(jù)句子The main threat to Asian elephants,one of the most intelligent animals is their shrinking habitat.亞洲象是最聰明的動物之一,主要的威脅是它們?nèi)諠u萎縮的棲息地.所以答案選D.
23.B 細節(jié)理解題.根據(jù)Tigers中的句子The main reasons for their population decline are illegal hunting and destroyed habitats,他們的人口下降的主要原因是非法狩獵和棲息地遭到破壞; human developments going through their habitat人類的發(fā)展通過了它們的棲息地;one of the most intelligent animals is their shrinking habitat.亞洲象是最聰明的動物之一,主要的威脅是它們?nèi)諠u萎縮的棲息地;可見對于這些動物的威脅主要是棲息地的破壞,所以答案選B.
24.A 推理判斷題.根據(jù)文章題目Four Wild Animal Species Were Endangered四種野生動物瀕臨滅絕,和文章內(nèi)容可以推斷出保護野生動物是緊急的,Urgent"緊急的,緊迫的",所以答案選A.

點評 本文是一個廣告布告類閱讀理解,題目涉及多道細節(jié)理解題,做題時結(jié)合原文和題目有針對性的找出相關(guān)語句進行仔細分析,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).

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