TEXTO:
Fooling with Mother Nature
Here comes the sun: How best to deal with climate change.
The shock of superstorm Sandy last year got a lot
of people wondering about better ways to deal with the
weather — perhaps even how to change it. John Latham,
a climate scientist based in Colorado, has been
[5] proposing ways to do that for more than two decades.
His studies show that it should be possible to spray fine
particles of sea water into clouds, increasing their ability
to reflect sunlight and thus reduce temperatures below.
Latham argues that global warming is leading to
[10] “irreversible and possibly catastrophic consequences”
and that the major polluting countries appear unwilling
to take dramatic action.
But Latham claims his cloud-seeding techniques
would help to hold Earth’s temperature constant “until a
[15] clean form of energy is developed to take over from oil,
gas, and coal.” He says, quite optimistically, that they
could keep the planet’s temperature stable for “perhaps
50 years.” If true, that would be a welcome breather from
impending doom. But what’s missing is money to fund
[20] large-scale experiments — and perhaps for a reason.
One thing we should know by now about our climate is
that when you fix one problem, you may create another.
DICKEY, Christopher . BIG THINK: Around the world in six ideas. Newsweek, March 25, 2013, p. 9.
“that would be a welcome breather from impending doom.” (l. 18-19)
A suitable translation of this sentence into Portuguese is
TEXTO:
Stephanie Kwolek
The lifesaving inventor of Kevlar
On the long list of happy accidents in science, some discoveries prove to be more monumental than others.
Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont—a rare
exception in the male-dominated world of chemistry—looking for a new synthetic fiber to use in tires. As she toiled in the
lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d
[5] made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to
be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets,
ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National
Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar
[10] has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice
full-circle twist, it’s used in tires too.
Fill in the parentheses with T (True) or F (False).
About Kevlar, it’s correct to say:
( ) It’s a natural fiber.
( ) It’s a high-strength material.
( ) It was discovered by chance.
( ) It provides protection against different kinds of danger.
The correct sequence, from top to bottom, is
TEXTO:
Stephanie Kwolek
The lifesaving inventor of Kevlar
On the long list of happy accidents in science, some discoveries prove to be more monumental than others.
Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont—a rare
exception in the male-dominated world of chemistry—looking for a new synthetic fiber to use in tires. As she toiled in the
lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d
[5] made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to
be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets,
ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National
Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar
[10] has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice
full-circle twist, it’s used in tires too.
About Stephanie Kwolek, it’s correct to say:
TEXTO:
Stephanie Kwolek
The lifesaving inventor of Kevlar
On the long list of happy accidents in science, some discoveries prove to be more monumental than others.
Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont—a rare
exception in the male-dominated world of chemistry—looking for a new synthetic fiber to use in tires. As she toiled in the
lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d
[5] made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to
be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets,
ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National
Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar
[10] has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice
full-circle twist, it’s used in tires too.
Considering its lifesaving properties, Kevlar has been effectively used in ____________
The only alternative that does not complete this blank correctly is
TEXTO:
Stephanie Kwolek
The lifesaving inventor of Kevlar
On the long list of happy accidents in science, some discoveries prove to be more monumental than others.
Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont—a rare
exception in the male-dominated world of chemistry—looking for a new synthetic fiber to use in tires. As she toiled in the
lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d
[5] made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to
be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets,
ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National
Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar
[10] has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice
full-circle twist, it’s used in tires too.
The reason why the products on the left benefit from Kevlar is correctly stated in alternative
TEXTO:
Stephanie Kwolek
The lifesaving inventor of Kevlar
On the long list of happy accidents in science, some discoveries prove to be more monumental than others.
Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont—a rare
exception in the male-dominated world of chemistry—looking for a new synthetic fiber to use in tires. As she toiled in the
lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d
[5] made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to
be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets,
ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National
Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar
[10] has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice
full-circle twist, it’s used in tires too.
The word or expression on the left has not been correctly defined in