공통영어2 천재 강상구 1과 변형문제

You are ____ a camping trip with your family or friends.

After a long day of hiking, you take a quick shower, sit in your favorite camping chair, ____ up a soda, and let out a deep, contented sigh.

Right at that moment, you hear that annoying and familiar buzzing ____

Beating its wings as fast as ____ times per second, a mosquito sneaks in and pierces your skin with its straw-like mouthparts.

Next, it fills its belly with blood and then escapes ____ leaving behind an itchy red bump.

This is a mild allergic reaction to the mosquito’s ____

The more you scratch the bump, the ____ it itches.

Carbon dioxide, which humans and other animals breathe out, is actually a key signal ____ mosquitoes that a nice meal is near.

They ____ highly sensitive to CO2 and can detect it from far away.

That’s not the only ____ they use to find their victims.

When you sweat, ____ release certain chemicals that attract them.

Moreover, they can easily ____ that your body temperature has risen.

____ do they want our blood in the first place?

It turns out that only females ____ us; they need protein to produce eggs.

____ our blood did not contain protein, they would not bother us.

After the mosquito successfully takes a blood meal of up to three times her own body weight, she ____ lands on the nearest vertical surface.

With ____ aid of gravity, she drains off the water from the blood she took.

____ this concentrated blood, she develops her eggs over the next few days.

She then lays roughly 200 floating eggs on the surface ____ a small pool of water.

If you had to choose our greatest predator in nature, which would ____ pick?

____ lions, or bears?

According to history professor Timothy Winegard, it is actually ____ mosquito.

Mosquitoes can pass on deadly diseases like malaria and yellow ____

Over a million people ____ die of these diseases every year.

Throughout history, Winegard estimates that mosquitoes have killed more people than any other single cause—about fifty two billion people, nearly half of all humans ____ have ever lived.

Winegard claims that mosquitoes also played a role in shaping the history of ____ countries.

Take the Roman Empire, ____ example.

The fall of the Western Roman ____ was gradual, spanning over centuries.

Here are commonly cited reasons for the fall of the empire: invasions by outside forces, economic troubles, ____ corruption.

Diseases ____ malaria, however, also contributed.

Rome, the capital ____ the empire, was once surrounded by a huge stretch of wetland.

This was an ideal breeding ____ for mosquitoes and hence a hot spot for malaria.

On the one hand, mosquitoes helped ____ the city against the armies coming to attack it.

However, they eventually spread the disease ____ only throughout the city, but also throughout the empire, crushing much of the population.

Here ____ another reason why Winegard considers the mosquito a powerful agent of historical change.

In 1698, five ships set sail from Scotland, carrying twelve hundred settlers and valuable trade ____

They headed for the Darien region of Panama, where ____ planned to create a trading center.

After struggling through years of a food crisis, Scotland had hoped this would help ____ its economic prospects.

The ambitious plan, however, was brought down by the ____ diseases: yellow fever and malaria.

Virtually no one from Scotland had ever encountered any ____ these diseases before.

After six months, nearly half of them died, and the survivors returned to ____ ships and fled.

If their immune systems had been much stronger, they would not have lost ____ many lives in such a short time.

Surprisingly, human beings lived with and died of these diseases for thousands of years without ____ how they were spread.

It was not until the end of the nineteenth century that we found out that mosquitoes spread ____

Before this finding, no one imagined that these tiny ____ insects might be affecting our lives so deeply.

Now we all know that human history is not free from the workings ____ the natural world.