New Holland honeyeaters are experts at soundi...

New Holland honeyeaters are experts at sounding the alarm when there's danger, according to new research from biologists at the Australian National University(ANU)and the University of Cambridge.

Study authors, Dr. Jessica McLachlan and Professor Rob Magrath, found honeyeaters can spread the word in the blink of an eye, using a two-stage alarm.

It's particularly effective when they are threatened by fast-moving birds of prey.

＂When a hawk is swooping down, its target has only a second to flee to cover-a split second can make the difference between life and death," Dr. McLachlan said.

＂But animals often signal urgent danger using repeated notes, which makes sure others hear the warning but it takes a long time to deliver."

＂So there's a problem. How to send a lightning-fast message in a long call?”

New Holland honeyeaters solve this problem elegantly. They "front-load" information about urgency into the first note of their alarm call, so other honeyeaters can respond quickly.

The clever honeyeaters follow this up with more notes to reinforce the message and signal how long to remain hidden.

＂They use a long call, with lots of notes, to make sure the message is heard," Professor Magrath said." And the more notes, the more urgent the danger."

＂But they also modify the first note to indicate if it's necessary to take immediate cover. So it's a two-part message that is quick, reliable and informative."

The technique is so effective the authors expect to see other species adopt it.

＂Many other species modify alarm calls as the threat increases, but there is surprisingly little known about how fast they convey the message," Professor Magrath said.

The researchers conducted their study in Canberra's National Botanic Gardens over a period of several years.

＂These birds live in the Gardens and are used to having people around. This helped us to record natural interactions with their predators(捕猎者)，such as sparrow hawks and currawongs, and to video the honeyeaters' responses to different alarm calls," Professor Magrath said.

1.According to Dr. Jessica McLachlan,______

A.speed counts when it comes to honeyeaters' life or death

B.the second-part message in a honeyeater's call is more reliable

C.the message about where to take cover is conveyed very fast

D.the urgency degree relies on the first note in a honeyeater's call

2.What does"they"in Paragraph 12 refer to?

A.alarm calls B.modified notes

C.other species D.clever honeyeaters

3.The researchers' findings are mainly based on

A.the comparison between honeyeaters and other birds

B.the analysis of length of alarm calls made by honeyeaters

C.the record of the honeyeaters' response and signal transmission

D.the observation of birds in Canberra's National Botanic Gardens

高三英语阅读理解中等难度题查看答案及解析

Women are meant to be the experts at shopping, but new research reveals the whole experience leaves them stressed. The surprise findings show that not all women get comfort from shopping.　 In fact, in a supermarket environment, one third of females feel it a burden when they do the weekly shop despite being organized and armed with shopping lists, The reason why women are more nervous in the supermarket is largely that they are rushing round trying to conduct the shopping as quickly as possible. Doing the food shop will be one item on a massive list of jobs，and something which simply has to be done at speed.　 Women even admitted to having an argument with another shopper in the supermarket－either because of trolley rage, fighting over the same item or queue jumping. They can't stand feeling rushed when the cashier scans items too quickly so they struggle to get everything into the right bags.

In contrast, three quarters of men quite enjoy their food shopping experience and are happy to push their way around the aisles searching out products. Men are less forgetful about what they want to buy, are less likely to feel rushed by the cashiers and are more methodical at the checkouts. Men seem to adopt a much more laid back and methodical approach, taking their time looking for bargains and make sure they're getting the most for their money.

But the poll suggests women are the savvier shoppers—as they are less baffled by all the different brands in the shop and are more likely to ask for help if needed.

高三英语其他题中等难度题查看答案及解析

Every Friday we have a fire alarm test at nine o'clock sharp, and even though the sound is very noisy, I am so happy because when I heard that it reminded me today is Friday and tomorrow is weekend, it is the last working day of the week and I have two days off, it’s so excited!Sometimes we have a fire drill, when you hear the fire alarm, everybody have to run out through the fire exit.

One Monday at nine o’clock, the alarm was sounded and I was working behind the fish house and didn’t hear it. The department manager and staff were looking for me thoroughly, finally they found me and asked me to stop my job and follow them went out.

"I am busy, No problem! You leave, I work." I said.

"No, this is the law, everybody has to leave." The manager said.

I understood that if I insisted not to leave, they must carry me out. I went out with them together finally, no choice.

One afternoon, when I was working outside, the fire alarm cropped up（突然出现） sounding wildly, nobody knew what’s happening, some were standing and looking around, some were asking questions, some were running, I knew this wasn’t a test or drill, must be a real one. At that moment, one lady called me from a distance:"Jinglebell: leave your job, go out quickly."I joined the crowded flow of customers and staff going out. I asked somebody what's happened? And they told me this is a real one as there was some smoke on the shop floor.Finally I found out, actually there was no problem, that it was an electrician who used the equipment for the carpet and made a little smoke.

After that I asked somebody how to deal with the customer’s food in the restaurant in that case, because they went out to leave because of the fire, but hadn't finished their food. They told me that the customers who had bought food or drinks there could get a new one.

I don't understand, if in China, under that situation, everybody must carry a bucket（桶） or some other water containers to the fire spot, to fight the flames.

I agree with the English emphasis the human right, but maybe a very small problem could become a big problem while everybody had withdrawn from the shop, because the fire fighters could not come at once.

I was just thinking.

1.Despite the noise from the fire alarm, the author still feels happy because _____.

2.If there is a fire breaking out in a restaurant, what will happen in China?

3.What’s the author’s attitude to the human right?

4.Why does the author think that a very small problem may become a big one while everybody had withdrawn from the shop?

高三英语阅读理解困难题查看答案及解析

There is no sound worse than an alarm clock first thing in the morning.Some of us are the type to jolt out of bed with a smile.1. While I have a love-hate relationship with mornings,I have found that there are indeed ways to make mornings a little more bearable.

Mentally plan out your day.

One way to combat the morning blues is to mentally plan out your day right when you wake up to prepare yourself for the day.Give yourself at least one little thing to look forward to each day.2.

Meditate.

Meditation (冥想) will clear your mind and relax your body.Even just ten minutes of focused mental thought can completely clear your mind.3. Of all of them,I like Headspace best,which provides 10-minute sessions that leave you feeling relaxed,and ready to have a great day!4.

People say “look good,feel good.” If you have your outfit ready in advance,you are more likely to feel confident and mentally prepared for the day.Whether it’s a pair of jeans or a sweater,pick out clothes that you feel great in.

Go with a friend or classmate to breakfast,school,etc.

5. Sharing the first moments of the day with others will fuel your mind and let you ease into your day. Also,having a regimented (受管制的) morning routine with others will help ensure that you are on-time for school and that you have a reason to get up in the morning.

A.Put on your clothes for the night.

B.Lay out your clothes the night before.

C.Others love to exercise in the morning.

D.Mornings are best when you have good company.

E.However,for others,mornings are the worst enemy.

F.It can even be a cookie of your favorite taste on the lunch break.

G..It’s easy with the availability of apps and YouTube guided exercises out there.

高三英语七选五中等难度题查看答案及解析

Many experts think the implications of the new legislation will need to be ________ .

高三英语单项填空简单题查看答案及解析

Picky eaters are ___unwilling to try new foods, which experts think, can be the result of your DNA and your upbringing.

A. vaguely　　 B. typically　　 C. literally　　 D. smartly

高三英语单项填空简单题查看答案及解析

The crocodile(鳄鱼) is an amazing animal. Why are they amazing? Crocodiles are experts at survival. Scientists say they first appeared 200 million years ago and have lived longer than the dinosaurs by some 65 million years. One reason why they are such good survivors is that they can go for a very long time without eating. And they are expert hunters! They use their strong jaws to bite their prey(猎物) and then they swallow their food whole. Another amazing fact about crocodiles is: When they lose a tooth, they grow one right back. A crocodile can go through 8, 000 teeth in one lifetime!

While these facts arc interesting, they really do not help to explain today’s expression: crocodile tears. Simply put, crocodile tears are fake sadness. You pretend to cry and feel bad for something when in fact you could not care less. A great word to describe crocodile tears is insincere.

The expression “crocodile tears” comes from an old story that crocodiles would cry tears as a fake show of guilt or sorrow to trick their prey. The prey would come closer and then become dinner. We know now that the story is not true. Scientists explain that crocodiles do produce tears. That is because while eating, they swallow too much air, which gets in touch with lachrymal glands (glands that produce tears) and forces tears to flow. But they’re not actually crying. Crying is purely emotional(情绪的) and is reserved for us humans.

When you use it, take some advice. You do not have to have actual tears flowing down your face to have “crocodile tears”. Sometimes, crocodile tears are worse than insincere. Those are the times when you are showing sadness but actually in your heart« you are quite happy about the situation.

1.How does the author mainly show that crocodiles are amazing?

A.By telling stories. B.By giving examples.

C.By conducting experiments. D.By making comparisons.

2.“Crocodile tears” is often said to a person who 　　　　　 .

A.has some insincere friends B.faces sorrowful situations

C.shows unreal sadness D.cares little about others

3.Why does a crocodile produce tears according to scientists?

A.The flow of its tears makes it appealing.

B.It pretends to be guilty to trick its prey.

C.It wants to show its emotional feelings.

D.The way it eats forces its tears to flow.

4.What is the best title for the text?

A.An Expression—“Crocodile Tears” B.What Crocodiles Actually Cry for

C.Unknown Facts About Crocodiles D.How “Crocodile Tears” Came Out

高三英语阅读理解中等难度题查看答案及解析

The crocodile (鳄鱼) is an amazing animal. Why are they amazing? Crocodiles are experts at survival. Scientists say they first appeared 200 million years ago and have lived longer than the dinosaurs by some 65 million years. One reason why they are such good survivors is that they can go for a very long time without eating. And they are expert hunters! They use their strong jaws to bite their prey (猎物) and then they swallow food whole. Another amazing fact about crocodiles is: When they lose a tooth, they grow one right back. A crocodile can go through 8,000 teeth in one lifetime!

While these facts are interesting, they really do not help to explain today’s expression: crocodile tears. Simply put, crocodile tears are fake sadness. You pretend to cry and feel bad or something when in fact you could not care less. A great word to describe crocodile tears is insincere.

The expression “crocodile tears” comes from an old story that crocodiles would cry tears as a fake show of guilt or sorrow to trick their prey. The prey would come closer and then become dinner. We know now that the story is not true. Scientists explain that crocodiles do produce tears. That is because while eating, they swallow too much air; which gets in touch with lachrymal glands (glands that produce tears) and forces tears to flow. But they’re not actually crying. Crying is purely emotional and is reserved for us humans.

When you use it, take some advice. You do not have to have actual tears flowing down your face to have “crocodile tears”. Sometimes, crocodile tears are worse than insincere. Those are the times when you are showing sadness but actually in your heart, you are quite happy about the situation.

1.How does the author mainly show that crocodiles are amazing?

A.By telling stories. B.By giving examples.

C.By conducting experiments. D.By making comparisons.

2.“Crocodile tears” is often said to a person who________ .

A.has some insincere friends B.faces sorrowful situations

C.shows unreal sadness D.cares little about others

3.Why does a crocodile produce tears according to scientists?

A.The flow of its tears makes it appealing. B.It pretends to be guilty to trick its prey.

C.It wants to show its emotional feelings. D.The way it eats forces its tears to flow.

4.What is the best title for the text?

A.An Expression — “Crocodile Tears” B.What Crocodiles Actually Cry for

C.Unknown Facts About Crocodiles D.How Crocodiles Show Sadness

高三英语阅读理解中等难度题查看答案及解析

Burglar alarms ________ at any time of the day or night serve only to annoy.

A．go off                                B．that are going of

C．that go off                             D．which going off

高三英语单项填空中等难度题查看答案及解析

All the students at school are required to ____ lectures by the experts on howto save themselves when accidents occur, such as fires, a gas leak and so on.

A. join in    B. take part in  C. attend   D. participate in

高三英语单项填空中等难度题查看答案及解析