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【简答题】

Special Bridges Help Animals Cross the Road — Reported by Sheila Carrick Why did the chicken cross the road? To get to the other side. Most people know this joke. But recently, some people have been much more worried about how the grizzly bear(灰熊)and mountain lion can cross the road. 'Millions of animals die each year on US roads,' the Federal Highway Administration reports. In fact,only about 80 ocelots, an enered wild cat, exist in the US today. The main reason? Road kill. 'Ecopassages (生态通道 ) ' may help animals cross the road without being hit by cars. They are paths both over and under roads. 'These ecopassages can be extremely useful, so that wildlife can avoid road accidents,' said Jodi Hilty of the Wildlife Protection Society. But do animals actually use the ecopassages? The answer is yes. Paul Beier of Northern Arizona University found foot marks left by mountain lions on an ecopassage that went under a highway. This showed that the lions used the passage. Builders of ecopassages try to make them look like a natural part of an area by planting trees on and around them. Animals seem to be catching on . Animals as different as salamanders(火蜥蜴) and grizzly bears are using the bridges and underpasses. The next time you visit a park or drive through an area with a lot of wildlife, look around. You might see an animal overpass! 小题1:The writer uses the example of 'ocelots ' to show that ________. A.wild animals have become more erous B.the driving conditions have improved greatly C.the measure for projecting wildlife fails to work D.an increasing number of animals are killed in road accidents 小题2: From the news story, we know an ecopassage is ________. A.an underground path for cars B.a fence built for the safety of the area C.a bridge for animals to get over a river D.a path for animals to cross the road 小题3: When the writer says that animals seem' to be catching on', he means ________. A.animals begin to realize the ers on the road B.animals begin to learn to use ecopassages C.animals are crossing the road in groups D.animals are increasing in number 小题4: The writer asks visitors and drivers to look around when traveling because________ A.wild animals may attack cars B.wild animals may jam the road C.they may see wild animals in the park D.they may see wild animals on ecopassages

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题目标签:灰熊通道火蜥蜴
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举一反三

【单选题】下列有关通道的作用描述正确的是( )

A.
通道是可以打印的
B.
通道中也可以保存路径信息
C.
利用通道调板无法观察和使用Alpha通道
D.
PhotoShop利用通道存储颜色信息和专色信息

【多选题】彩色电视中,中频通道的作用主要有()

A.
放大图象信号
B.
检波得彩色全电视信号
C.
输出第二伴音中频信号
D.
产生AGC信号
E.
产生AFT信号
F.
抑制邻近频道的干扰

【单选题】钠通道的可利用率依从于

A.
钠通道的数量
B.
刺激持续的时间
C.
刺激的强度
D.
受刺激前的静息电位数值

【单选题】关于快Na+通道的描述,错误的是

A.
当膜电位达阈电位时,开放速率和数量明显增加,出现再生性钠电流
B.
选择性较强,只允许 Na + 通过
C.
激活和失活的速度都很快
D.
是电压-时间依从性通道
E.
可被 TTX 阻断

【单选题】客户若要获得专项钻石版版绿色通道服务,购买十年交产品,保费需要满足()

A.
重疾险系列5000元/年,其他主险10000元/年
B.
重疾险系列6000元/年,其他主险20000元/年
C.
重疾险系列8000元/年,其他主险30000元/年
D.
重疾险系列10000元/年,其他主险50000元/年