영어1 천재 강상구 4과 본문 빈칸

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

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

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

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

Welcome ____ the show, Mr. Weidensaul.

Thanks for having ____ Jo.

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

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

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

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

____ there are fewer predators at night.

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

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

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

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

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

Some ____ 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 ____ ocean.

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

This is how it ____

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

Isn’t it ____

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

____ wouldn’t like to have such an ability?

Birds in migratory condition can do things that they ____ do at other times of the year.

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

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

____ just eat and eat until they double their weight.

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

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

Then what happens after ____ arrive there?

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

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

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

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

____ do you come here so often?

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

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

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

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

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

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

That’s why the Yellow Sea is ____ critically important.

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

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

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

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

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

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

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

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

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