手机APP下载

您现在的位置: 首页 > SAT > SAT每日一题 > 正文

SAT官方每日一题附答案和解析[阅读](2019年5月24日)

来源:可可英语 编辑:max   VIP免费外教试听课 |  可可官方微信:ikekenet


Critical Reading>Select an Answer

Building a road through wilderness certainly has a visible impact on local flora and fauna—you're physically paving over a slice of what was once habitat. But roads have less obvious effects, too. Like the introduction of traffic noise, which also takes a toll. "You can see an oil spill but you can't see a traffic noise spill. So convincing people that it's important is a little more difficult," said Heidi Ware.

Ware is an ornithologist at the Intermountain Bird Observatory in Boise, Idaho. She and her colleagues studied the reactions by birds to the sounds of vehicles. And they did it without paving the great outdoors. Instead, they mounted 15 pairs of speakers on Douglas fir trees, along a ridge near Boise, and played traffic noise. They thus created what they call a "phantom road" through the wilderness, which boosted local noise levels 10 decibels higher than those in the surrounding forest.

Turns out just the sounds of traffic scared away a third of the area's usual avian visitors, and cut species diversity too. And birds of multiple species were not able to pack on as much fat to fuel their migrations, when they were forced to dine to the soundtrack of traffic.

Follow-up experiments in the lab found that, when it's noisy, birds spend a lot less time head down, pecking at food, and a lot more time scanning their surroundings.

Ware says Yosemite, Glacier and Rocky Mountain National Parks all have roads that are busy enough to produce these effects. And, short of closing park roads to traffic, she says things like rubberized asphalt and lower speed limits could help cut the noise. "Glacier National Park is going to put up signs, that instead of showing your speed and preventing people from speeding, it's going to show how loud their car is on the road." Which, hopefully, will continue to encourage wilderness lovers to leave no trace—visible or audible.

The main idea of the first paragraph is that the presence of a road through a wilderness area __________

(A) affects the environment in ways that can be hard to recognize.
(B) increases the level of unnatural noise and decreases the level of natural noise.
(C) reduces the number of plants that serve as a source of food for wildlife.
(D) leaves the area vulnerable to oil spills and other physical damage caused by cars.

重点单词   查看全部解释    
produce [prə'dju:s]

想一想再看

n. 产品,农作物
vt. 生产,提出,引起,

联想记忆
X
单词produce 联想记忆:
pro向前,duce引导-引导出的产品-农产品
 
impact ['impækt,im'pækt]

想一想再看

n. 冲击(力), 冲突,影响(力)
vt.

联想记忆
X
单词impact 联想记忆:
im进入,pact压紧的-进入压紧的状态-冲击;影响力
 
ridge [ridʒ]

想一想再看

n. 脊,山脊,山脉

 
obvious ['ɔbviəs]

想一想再看

adj. 明显的,显然的

联想记忆
X
单词obvious 联想记忆:
ob加强状态+vi道路+ous→就在路上→明显的
 
slice [slais]

想一想再看

n. 薄片,切片
vt. 切成薄片,削

 
diversity [dai'və:siti]

想一想再看

n. 差异,多样性,分集

联想记忆
X
单词diversity 联想记忆:
di分开,vers转-多样性
 
recognize ['rekəgnaiz]

想一想再看

vt. 认出,认可,承认,意识到,表示感激

 
observatory [əb'zə:və.tri]

想一想再看

n. 天文台,气象台,了望台

联想记忆
X
单词observatory 联想记忆:
observe观察+atory表名词,“场所,地点”→天文台
 
affect [ə'fekt]

想一想再看

vt. 影响,作用,感动

联想记忆
X
单词affect 联想记忆:
af一再,fect做,力求-力求使人做-影响
 
vulnerable ['vʌlnərəbl]

想一想再看

adj. 易受伤害的,有弱点的

联想记忆
X
单词vulnerable 联想记忆:
vulner=wound(n 创伤),able-易受伤的
 


新东方SAT网络课程:试听更多SAT网络课程>>

发布评论我来说2句

    可可英语官方微信(微信号:ikekenet)

    每天向大家推送短小精悍的英语学习资料.

    添加方式1.扫描上方可可官方微信二维码。
    添加方式2.搜索微信号ikekenet添加即可。