Q4: Nocturnal means:

A、Animals that come out at night

B、Blind animals

C、Animals that come out in the day

D、/

提问人：网友dbdxyan1981 发布时间：2022-01-07

参考答案

抱歉！暂无答案，正在努力更新中……

如搜索结果不匹配，请联系老师获取答案

您可能会需要：

重置密码查看订单联系客服

安装简答题APP，拍照搜题省时又省心！

更多“Q4: Nocturnal means:”相关的问题

第1题

Chronobiology might sound a little futuristic – li...

Chronobiology might sound a little futuristic – like something from a science fiction novel, perhaps – but it’s actually a field of study that concerns one of the oldest processes life on this planet has ever known: short-term rhythms of time and their effect on flora and fauna. This can take many forms. Marine life, for example, is influenced by tidal patterns. Animals tend to be active or inactive depending on the position of the sun or moon. Numerous creatures, humans included, are largely diurnal – that is, they like to come out during the hours of sunlight. Nocturnal animals, such as bats and possums, prefer to forage by night. A third group are known as crepuscular: they thrive in the low-light of dawn and dusk and remain inactive at other hours. （摘选自雅思学术阅读训练题） Guess the meaning of the underlined words. Q1: Futuristic means:

A、Advanced technology

B、Science fiction technology

C、Scientific

D、/

点击查看答案

第2题

An owl（猫头鹰) is a bird. There are two basic types of owls: typical owls and barn owls. O

An owl(猫头鹰) is a bird. There are two basic types of owls: typical owls and barn owls. Owls live in almost every country of the world.

Owls are mostly nocturnal, meaning they are awake at night. Owls are predators——they hunt the food that they eat. Owls hunt for mice and other small mammals, insects, and even fish. Owls are well adapted for hunting. Their soft feathers make their flight nearly silent. They have very good hearing, which helps them to hunt well in the darkness. The sharp hooked beaks and claws of the owl make it very easy to tear apart prey quickly, although owls also eat some prey whole.

Owl eyes are unusual. Like most predators, both of the owl's eyes face front. The owl cannot move its eyes. Owls are far-sighted, which means they can see very well far away, but they can't see up close very well at all. Fortunately, their distant vision is what they use for hunting, and they can see far away even in low light.

Owl can turn their heads 180 degrees. This makes it look like they might be able to turn their heads all the way around, but 180 degrees is all the owl needs to see what's going on all around him.

(66) Perhaps because of the owl's mysterious appearance, especially its round eyes and flexible neck, there are a lot of myths and superstitions (迷信) about owls. Many cultures believe that owls are unusually wise. Because owls are nocturnal, some cultures associate owls with bad omens. However, owls probably do not interact with the fates of humans at all. In fact, some owl species may become extinct because of humans.

Which of the following is NOT true about owls？

A．Owls eat small animals.

B．Owls are able to fly silently.

C．Owls have very poor vision.

D．Owls have flexible necks.

点击查看答案

第3题

听力原文：Human population near the equator have evolved dark skin over many generations be

听力原文： Human population near the equator have evolved dark skin over many generations because of exposure to the fiercest rays of the sun. A similar phenomenon has also occurred in other parts of the animal kingdom. The African grass mouse is a good example. Most mice are nocturnal, but the African grass mouse is active during daylight hours. This means that it spends its days searching for food in the semi-dry bush in squired habitats of eastern and southern Africa. Its furry stripe's like a chipmunk's, which helps it blend in with its environment.

Because it spends a lot of time in the intense tropical sun, the grass mouse has also evolved two separate safeguards against the sun's ultraviolet radiation. First, like the population of humans in this region of the world, the skin of the grass mouse contains lots of melanin, or dark pigment. Second and quite unusual, this mouse has a layer of melanin pigmented tissue between its skull and skin. This unique cap provides an extra measure of protection for the grass mouse and three other types of African mouse, like rodents that are active during the day. The only other species scientists have identified with the same sort of skull of that occasion is the white camp-making bat of the Central American tropic. Although these bats sleep during the day, they do so curled up with their head exposed to the sun.

(44)

A．The adaptations of the African grass mouse to its environment

B．The sleeping habits of the African grass mouse

C．The effect of intense sunlight on the diet of the African grass mouse

D．The habitat of the African grass mouse

点击查看答案

第4题

夜间阵发呼吸困难（paroxysmal nocturnal dyspnea)

夜间阵发呼吸困难(paroxysmal nocturnal dyspnea)

点击查看答案

第5题

夜现周期性（nocturnal periodicity)