Bats are surprisingly long-lived creatures, s...

Bats are surprisingly long lived creatures, some ________ a life span of around 20 years.

A.having B.had C.have D.to have

高二英语单项填空中等难度题查看答案及解析

Bats are surprisingly long lived creatures, some ________ a life span of around 20 years.

A. having　　 B. had　　 C. have　　 D. to have

高二英语单项填空中等难度题查看答案及解析

Bats are surprisingly long-lived creatures, some _____ a life span of around 20 years.

A. having　　 B. had　　　　　　 C. have　　　　　　 D. to have

高二英语单项填空中等难度题查看答案及解析

Bats are surprisingly long-lived creatures, some _______ a life span of around 20 years.

A. had　　　　　　　　 B. having　　　　　　　　 C. have　　　　　　　　　 D. to have

高二英语单项填空中等难度题查看答案及解析

Bats are surprisingly long-lived creatures, some____________ a life span of around 20 years.

高二英语单项填空中等难度题查看答案及解析

Bats are surprisingly long-lived creatures, some ____________ a life span of around 20 years.

A. having            B. had               C. have              D. to have

高二英语单项填空中等难度题查看答案及解析

Bats are surprisingly long-lived creatures, some ________ a life span of 20 years.

A．having            B．had              C．have             D．to have

高二英语单项填空中等难度题查看答案及解析

Stories and movies often make bats into scary creatures that attack in the dark of night. In real life, however, most bats are harmless. A few are even helpful to humans.

Over 800 species or types of bats feast on troublesome insects that damage crops or spread disease. Another 400 or so bat species eat ripe fruit. These bats are very useful because they pollinate (授粉) flowers and disperse (分散) seeds. There are also a few species of larger bats that hunt small animals like mice, fish, and frogs. A very few even drink blood.

The blood drinkers are the three species of vampire bats. However, the vampire bat doesn’t suck blood. Instead, it makes a wound with its sharp teeth and then laps the blood up like a kitty. The animal victim usually sleeps through the entire process. While attacks on humans have occurred, the bats’ common targets are livestock and other animals. Interestingly, the vampire bat may become useful to humans. You see, a chemical in the bat’s saliva (唾液) thins blood and dissolves blood clots (血栓). Studies indicate this could be a great aid in treating people with strokes. In the future, medicine may be made from vampire bats’ saliva.

Some people think bats are birds, but they’re not. They have fur, not feathers. And their babies do not hatch from eggs; they’re born alive. Also, bats have mouths and noses; birds have beaks. Scientists put them in a special mammal group called Chiroptera.

1.Most species of bats eat ________.

A.ripe fruit B.mice and frogs

C.insects D.blood

2.Which of the following is TRUE about blood drinkers?

A.Vampire bats drink blood directly.

B.The bats’ uncommon targets are human beings.

C.A chemical in the bats is of great benefit treating heart disease.

D.Medicine has been produced from the bats’ saliva

3.What is the best title of the passage?

A.Blood Drinkers B.Vampire Bats

C.Amazing Bats D.Scary Creatures

高二英语阅读理解中等难度题查看答案及解析

______ there are living creatures in the outer space as those on Earth hasn’t been proved so far.

A．When            B．How              C．If                D．Whether

高二英语单项填空中等难度题查看答案及解析

Dolphins are universally regarded as some of the cleverest creatures in the world. In captivity ( 圈养), they can be trained to complete complex tasks such as jumping through hoops and somersaulting through the air.

But their intelligence doesn’t stop there. In a recent study of cetaceans (鲸目动物)--a group of animals that includes dolphins and whales--researchers created a list of intelligent behaviors observed in 90 different cetacean species, reported the Guardian. For example, the smartest cetaceans hunt in groups, share knowledge through mimicry (模仿) and even care for each other's children. Some even consider their behavior to be human-like.

“There is the saying that ‘it takes a village to raise a child’ seems to be true for both whales and humans,”

Michael Muthukrishna of the London School of Economics, co-author of the study, told the Guardian.

However, cetaceans don’t just use their brain power for survival. The study suggests that dolphins might even gossip. That's because some species greet each other with specific whistles, just as humans greet each other by name, the Guardian reported. Sometimes, a group of dolphins whistles the “name” of a dolphin that isn't there. Could they be speaking about their “friend” behind its back?

For the researchers, dolphin small talk is a big deal. As they found that the most social cetaceans also have the largest brains, they argue that cetacean intelligence developed to meet the demands of complex social groups.

Known as the “cultural brain hypothesis (假设),” it had only been used to explain the intelligence of humans and other primates (灵长目动物). The new study aimed to find a common pathway for the evolution of intelligence among biologically different species.

“It is interesting to think that whale and human brains are different in their structure but have brought us to the same patterns in behavior, ” Luke Rendell, a biologist at the University of St Andrews, told the Guardian.

Indeed, we still have a lot to learn about our intelligent ocean-dwelling neighbors. “We don’ t have to look at other planets to look for aliens,” Muthukrishna told the Guardian, “because we know that underwater there are these amazing species with so many parallels to us in their complex behaviors.”

1.The recent study was intended to ______.

A.learn more about intelligent creatures of the sea

B.explain the intelligence of humans and cetaceans

C.create a list of intelligent behaviors of different cetacean species

D.see whether the intelligence of different species evolved in the same way

2.The implied　 meaning of the underlined part in Paragraph 3 is that ______.

A.villagers have the responsibility　 to raise any child in the village

B.like human beings, whales even help raise each other’s babies

C.cetaceans have social behaviors very similar to human beings

D.it is not easy for one villager to take care of his or her own child

3.It can be inferred from the passage that ______.

A.it is unnecessary to look for aliens and do research into them

B.some cetaceans have the same intelligence as human beings

C.both dolphins and whales greet each other with specific whistles

D.both dolphins and whales have a lot in common with humans in behaviors

4.What is the best title for this passage?

A.Aliens living underwater B.A study of intelligent dolphins

C.Intelligent creatures of the sea D.Reasons for the intelligence of sea creatures

高二英语阅读理解中等难度题查看答案及解析