영어1 천재 강상구 4과 본문 빈칸

Hello, listeners. Did you know there are times at night ____ a massive migration happens right over your heads?

The scale of migration involving billions of birds traveling up to ____ of kilometers leaves you in awe.

On today’s Jo’s Tea ____ , we invite naturalist and author Scott Weidensaul to share his knowledge.

He’s ____ decades studying migratory birds, writing about them, and engaging in conservation efforts.

____ to the show, Mr. Weidensaul.

____ for having me, Jo.

Your new book says every spring and fall, hundreds of millions to billions of migratory birds pass over our roofs, but we seem to have no ____ that it’s happening. Why is that?

Well, most birds ____ after dark, including almost all of the birds that are normally active during the day.

That’s why it’s ____ for us to realize the migration is happening.

They ____ at night because the night sky is cooler, and the air calmer.

Besides, there are ____ predators at night.

If you ____ strip away the night sky and make everything visible, this migration would probably be the largest, greatest natural spectacle on the planet.

Among ____ global travelers in your book, I found the bartailed godwits to be particularly impressive.

Sure. Some of them can even make a 10,000 km nonstop ____ across the Pacific Ocean, from western Alaska to New Zealand in 11 days.

____ do they travel such a long distance over a nearly featureless ocean?

To find their routes, the bar-tailed godwits probably rely on the sun and stars among ____ things.

____ experts believe that they may be able to sense the earth’s magnetic field lines, too.

You may also wonder how, if ever, they sleep while flying over a vast ____.

It turns out that migratory birds use an approach called “half-brain ____.”

This is ____ it works.

Only the left half of the brain sleeps for a couple of seconds, then only the ____ half for the next couple of seconds, and then this process repeats over and over again.

Isn’t it ____?

Actually, some sea mammals like dolphins can do that, too, because they have to ____ breathing consciously.

Who wouldn’t like to have ____ an ability?

Birds in migratory condition ____ do things that they can’t do at other times of the year.

Another neat trick you might envy is that they can gain a tremendous ____ of muscle tissue without exercise.

For example, before some bar-tailed ____ leave Alaska in September and make a 10,000 km flight across the Pacific, they undergo a process of binge feeding.

They just ____ and eat until they double their weight.

By the time they take off, their heart and flight muscles may ____ increased by 50%.

After they have eaten as much as they possibly can and can’t put any more weight on, their digestive organs ____ dramatically because these won’t be put to use during the non-stop flight to New Zealand.

Then what ____ after they arrive there?

They regrow their ____ organs and spend the summer feeding again, and they undergo the same journey back to Alaska.

They do this again and again for 25 to 30 years, flying up to 30,000 km ____ year.

By the time bar-tailed godwits die, they have flown close to twice the distance from Earth to the ____.

That’s ____ impressive. By the way, I hear you’ve visited Korea several times before.

Why do you come here so ____?

As a bird watcher and conservationist, I find the ____ Sea mudflats between Korea and China very special.

They are some of the largest tidal mudflats on the earth and provide a critical stopover point for the countless migratory birds on the East ____ Flyway.

While these enormous stretches of tidal mud look featureless to the human eye, they have plenty of marine ____ forms.

So the mudflats are drawing all kinds of birds in from as far away as New ____, Australia, and Asia?

Yes. Many of these birds fly several thousand kilometers to ____ to the Yellow Sea.

Here, they have to double their weight in less ____ two weeks and make another flight of several thousand kilometers up north.

____ why the Yellow Sea is so critically important.

It’s ____ of the few places in the world where migratory birds can get the resources they need on their difficult journey.

Oh, I had no idea that the Yellow ____ has such importance.

What do you think we can do to preserve this precious gathering place for ____ birds?

Well, you can start by raising awareness of its importance among people around ____.

Or, if you ____ to be more actively involved, you can participate in cleaning up beaches or monitoring wildlife habitats.

On a bigger scale, because migratory birds travel through many ____, international cooperation is a must for their protection.

Actually, I’m working with an international organization ____ of the countries along the East Asian-Australasian Flyway.

As a result of our ____ collaboration, we managed to successfully bring back the endangered blackfaced spoonbills.

Fascinating! Mr. Weidensaul, today you ____ us see migratory birds and the Yellow Sea in a whole new way. Thank you!