【解析】【语篇分析】1.根据 People are allowed to kill the grey squirrels in Britain.可知答案。2.根据 Adult grey squirrels weigh between 400and 800 grams.可知答案。3.根据 T his means any loss of forests greatly influences the population of red squirrels.可知答案。4.根据 Another reason for the...
C [解析]根据上文“So why are red squirrels' losing out in competition with gray squirrels? Size is one factor, but there are others.那么为什么红松鼠会在与灰松鼠的竞争中失利呢?大小是一个因素,但也有其他因素。”可知此处应填与其他影响红松鼠在与灰松鼠的竞争中失利的因素有关的内容。分析备选项...
2003. Food-hoarding behavior of gray squirrels and North American red squirrels in the central hardwoods region: implications for forest regeneration. Canadian Journal of Zoology 81:1636-1639.Goheen J.R. and Swihart R.K., 2003. Food-hoarding behavior of gray squirrels and North American red ...
52.Adult grey squirrels weigh 800grams at least.B 53.The population of red squirrels will be greatly affected if more forests are destroyed.A 54.Grey squirrels are able to use food provided by people.A 55.More grey squirrels die of the certain virus than red squirrels.B. ...
one of the conservation groups working together to help save 20species from dying out in England. Their efforts aim at helping the pine marten and other at-risk species. Red squirrels are threatened by invasive gray squirrels, which out-compete the native squirrels for food and pass on a dead...
3.B.细节理解题.根据第二段A pine marten was spotted in Kielder Forest by John Hartshorne, a volunteer who monitors the red squirrel population in the forest, part of an effort to stop gray squirrels from further invading(入侵) the red squirrels' territory.John Hartshorne在基尔德森林发现了一只...
Red squirrels used to be a common sight in Britain.But since the gray squirrels were introduced from North America,the red squirrels became fewer and fewer.Now there are fewer than 140,000red squirrels left.People are allowed to kill the gr
Squirrels(松鼠)live in trees. But do you know that some frogs live in trees too? The tree frog is hard to find. This frog can change color. On green leaves, it stays green. On a brown branch, it turns brown. Some tree frogs can change from green to gold or blue...
题目Birds live in trees.Squirrels live in trees.But do you know that some frogs live in trees,too?The tree frogs are hard to find.The frogs can change colours.On green leaves,they stay green.On brown branches,they turn brown.Some tree frogs can change from green to ...
On first sight,the two types of squirrel are similar.They both have a long tail,large eyes,small ears and powerful back legs.However,grey squirrels are much stronger and heavier than red squirrels.Adult grey squirrels weigh between 400and 800grams.This allows them to store more fat and helps...