Sperm whales can produce stronger ultrasonic waves to kill their prey than dolphins.A．Righ

Irish Dolphins May Have a Unique Dialect

Irish scientists monitoring dolphins living in a river estuary in the southwest of the country believe they may have developed a unique dialect to communicate with each other.

The Channel Dolphin and Wildlife Foundation (SDWF) has been studying a group of up to 120 bottle-nose dolphins in the River Shannon using vocalisations collected on a computer in a cow shed near the River Shannon.

As part of a research project, student Ronan Hickey digitised and analysed a total of 1,882 whistles from the Irish dolphins and those from the Welsh dolphins on a computer and separated them into six fundamental whistle types and 32 different categories. Of the categories, he found most were used by both sets of dolphins—but eight were only heard from the Irish dolphins.

"We are building up a catalogue of the different whistle types they use and trying to associate them with behaviour like foraging, resting, socialising and the communications of groups with calves," project leader Simon Berrow said. "Essentially we are building up what is like a dictionary of words they use or sounds they make. "

Berrow, a marine biologist, said the dolphins' clicks are used to find their way around and locate prey. The whistles are communications. "They do a whole range of other sounds like barks, groans and a kind of gunshot. " He said. "The gunshot is an intense pulse of sound. Sperm whales use it to stun their prey. "

"When I first heard it I was surprised as I thought sperm whales were the only species who used it. We can speculate the dolphins are using it for the same reason as the sperm whales. " Berrow said.

References in local legend indicate there have been dolphins in the Shannon estuary for generations and they may even have been resident there as far back as the 6th century.

They are regularly seen by passengers on the Shannon ferry and an estimated 25,000 tourists every year take special sightseeing tours on local boats to visit them.

The difference in eating habits between the bottle-nose dolphins and the sperm whales interested the SDWF scientists.

A．Right

B．Wrong

C．Not mentioned

Every year we go to Florida.We like to go to the beach.

My favorite beach is called Emerson Beach.It is very long, with soft sand and palm trees.It is very beautiful.I like to make sandcastles and watch the sailboats go by.Sometimes there are dolphins and whales in the water!

Every morning we look for shells in the sand.I found fifteen big shells last year.I put them in a special place in my room.This year I want to learn to surf.It is hard to surf, but so much fun! My sister is a good surfer.She says that she can teach me.I hope I can do it!

1.My favorite beach is...()

A.Surf Beach

B.Emerson Beach

C.Palm Beach

D. Long Beach

2.What animals do I see in the water？()

A.Sharks

B.Starfish

C.Dolphins

D. Dogs

3.How many shells did I find last year？ ()

A.Twelve

B.Five

C.Fifty

D. Fifteen

4.What do I want to learn this year？()

A.Surfing

B.Swimming

C.Sailing

D. How to find shells

5.Where did I put my shells last year？()

A.In a box

B.In the garage

C.In my room

D. In Florida

and whales, it is a mammal(哺乳动物). That is, its babies are born alive, and they drink milk from the mother's body.

The hippopotamus is a large grey animal with a big head and mouth. It __2__ four tons, or about 4,000 kilograms. Its stomach is seven meters long, and it eats only plants. It is a mammal, but it spends a lot of time in the water.

During the day, it sleeps beside a river or a lake. Sometimes it wakes up. Then it goes under the water to get some __3__ for food and never catches fish or hunts other animals. It can close its nose and stay under water for ten minutes. Its ears, eyes, and nose are high up on its head. It can stay with its body under the water and only its ears, eyes, and nose above the water. Then it can breathe the air.

At night, the hippo walks on the nearby land and looks for food. It never goes very __4__ the water.

A baby hippo often stands on its mother's __5__-- the part of the body between the neck and legs. The mother looks for food underwater. The baby rides with a sure footing on her mother above the water.

1)、A.far from

B.weighs

C.plants

D.Like

E.back

2)、A.far from

B.weighs

C.plants

D.Like

E.back

3)、A.far from

B.weighs

C.plants

D.Like

E.back

4)、A.far from

B.weighs

C.plants

D.Like

E.back

5)、A.far from

B.weighs

C.plants

D.Like

E.back

A.gland

B.sperm

C.rushing

D.pregnancy

A.Ask questions of the users who are affected by the problem.

B.Define the problem in terms of symptoms and causes.

C.Collect technical data from network management systems and logging servers.

D.Change one setting or component and then analyze the result.

E.Eliminate known issues first.

A.prostatic fluid only

B.seminal fluid and prostatic fluid

C.sperm only

D.sperm and seminal fluid

E.sperm, seminal fluid, and prostatic fluid

Which one is talking about Empathy for Customers/Users which is Apple’s Values？

A.They offer superior products that fill real needs and provide lasting value.

B.They expect to make this world a better place to live.

C.They accept the risks inherent in following our vision, and work to develop leadership products that command the profit margins we strive for.

D.Each employee can and must make a difference.

65 You must produce 27 widgets. You can only produce 9 widgets per production run. Each production line setup costs $1000. Each widget consumes $10 worth of material and $5 worth of labor. What is the total fixed cost for producing the widgets.

A. $3,000

B. $27,000

C. $27,270

D. $1,335

E. $1,000

A.gravity; point of sperm entry

B.maternal factors in both cases

C.position in the egg chamber; gravity

D.the point of sperm entry; gravity

f their heads. Dolphins are social animals and love company. Many of them, in fact, even enjoy being around humans. It is not uncommon to hear of dolphins giving rides through the water to humans.

In addition to being playful, dolphins are helpful to men. For example, as 400 B. C. the Greek poet Arion was saved from drowning by a dolphin. From then until now, dolphins have been helping swimmers who are in trouble. Swimmers, however, are not the only humans they help. In some parts of the world, they can be counted on to help men catch fish.

Moreover, dolphins are very intelligent. A dolphin's brain resembles a human brain, but it is larger. Consequently, some people claim that dolphins are really smarter than men. Of course, there is no way of proving this point. Brain size is not an absolute measure of intelligence. Furthermore, measuring dolphins' intelligence in other ways is not possible since men cannot fully communicate with them. Apparently, however, dolphins communicate with each other. At any rate, they make whistling, clicking and buzzing sounds which seem to be at least a form. of language. So far, however, men have not been able to figure out the communication code the dolphins use.