题目内容

【题目】“大风呼呼刮,平地起黄沙,无风三尺土,沙撵人搬家”,甚至造成“穷荒绝漠鸟不飞,万碛千山梦犹懒”的景观,这是几年前吉林省西部地区的真实写照。据此完成下列各题。

【1】吉林省西部最突出的生态环境问题是

A．荒漠化 B．水土流失

C．酸雨 D．生物多样性减少

【2】对于当地生态环境变化的叙述,正确的是

A．常年受副热带高气压带控制是其主要原因

B．过度放牧、开垦、樵采是造成荒漠化的主要原因

C．实施跨流域调水是治理荒漠化的主要途径

D．新中国成立以后,该地区的荒漠化得到了有效的控制

【答案】

【1】A

【2】B

【解析】

试题分析：

【1】根据材料，该地风沙危害严重，吉林省西部最突出的生态环境问题是荒漠化，A对。水土流失主要发生在湿润区，B错。材料不能反映出酸雨危害，生物多样性减少问题，C、D错。

【2】当地生态环境变化，过度放牧、开垦、樵采是造成荒漠化的主要原因，B对。该地纬度较高，不受副热带高气压带控制，A错。因地制宜利用土地资源，退耕还林、还草是治理荒漠化的主要途径，C错。新中国成立以后，该地区的荒漠化有加剧趋势，D错。

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【题目】Good news for giant panda lovers: The cute and cuddly creature has just been brought back from the brink of extinction. The International Union for Conservation of Nature (IUCN) downgraded the species from “endangered” to “vulnerable” as the union released its updated Red List on Sept 4 at Hawaii.

The downgrade came after IUCN data suggested that there were 1,864 giant pandas in the wild in China in 2014 — their population has grown by 17 percent in the decade leading up to 2014.

Chinese conservation efforts, including forest protection and reforestation, are considered to be the driving force behind the animal’s resurgence.

“It’s all about restoring the habitats,” Craig Hilton-Taylor, head of the IUCN Red List, told the BBC.

The number of panda reserves in China has also jumped to 67, from 13 in 1992. Nearly two-thirds of all wild pandas live in these reserves, according to the World Wildlife Fund.

“Just by restoring the panda’s habitat, that’s given them back their space and made food available to them,” Hilton-Taylor said.

A loss of habitats, on the contrary, was what caused the number of pandas to drop to just over 1,200 in the 1980s, Hilton-Taylor added.

Apart from giant pandas, the Tibetan Antelope has also moved from “endangered” to “near threatened”. According to a statement from IUCN, the animal’s numbers dwindled severely — dropping from around 1 million to an estimated 65,000-72,500 in the 1980s and early 1990s — due to commercial poaching. Rigorous(严格的) protection has since been enforced to protect the beasts and the population is now likely to be between 100,000 and 150,000.

Despite the improved statuses, wild animals like the giant panda and the Tibetan Antelope still face great challenges. The IUCN warned, for example, that ongoing threats from climate change could eliminate more than 35 percent of the panda’s bamboo habitat in the next 80 years, which would reverse the species recent gains.

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C. weak and easily hurt.D. normal and common.

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A. Better climate.B. More built reserves.

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【3】The passage is written in order to ________.

A. convinceB. informC. argueD advocate

【4】What does the last paragraph imply?

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C. Pandas will go extinct for lack of abundant food.

D. We humans still have a long way to go to protect the endangered species.

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