Rubber ducks are being
used to help scientists understand global warming and melting glaciers (冰川)
. NASA researchers have 21 90 ducks into holes in
Greenland's fastest moving glacier, the Jakobshavn Glacier between Greenland
and Canada.The 22 have each been marked with the words
"science experiment" along with an e-mail address. If they are found
scientists will be able to
23 how the water moves
through the ice and provide information about the 24
of glaciers. Scientists are still 25
about why glaciers speed up in summer and head towards the sea. One
theory is that as the summer sun melts ice on top of the glacier's surface, the
water moves to the bottom of the glacier, where it helps to 26
the movement of ice toward the coast. The Jakobshavn Glacier is
believed to be the 27 of the iceberg that sank the Titanic
in 1912. Robert Jones, the experiment organizer, said none of the ducks had
been_ 28 yet. "We haven't heard back but it
may take some time until somebody actually finds it and decides to send us a/an
__29 _ that they have found it," he said. "These are places that
are __30 so there aren't
people walking around."
21.B 从下文…they are found scientists will
be able to 23 how the water moves through the ice…以及____90
ducks into holes…可知,此空如果是bury 则bury sth. in/into ice，故应是drop
sth. into holes.
30. B 此空由上文Greenland's
fastest moving glacier及地理日常知识可推知，此空应是 “人烟稀少、荒凉”之意。
强化训练2
Have you ever regretted
doing something you shouldn't have done or something you didn't do which you
should have? At one time of another we probably we probably all have. There's
no 21 in getting depressed about now-it's
no __22__ crying over spilt milk. However, there may be some gain in
thinking about exactly what happened and why 23 we might be able to draw some
conclusions for the future.
One
thing we all do now and again is to lose our 24
with a friend or close
relative. The odd thing is that we more often display great 25 towards someone we are fond of than
towards 26 .The explanation may be that we see
friends and relatives as a kind of safety net, an opportunity to 27
a bit of steam in a safe
environment, while the consequences of 28
a stranger could be far more serious.
Being
honest is usually thought of as a virtue (美德) and undoubtedly
this is the 29 . On the other hand, we have all
experienced occasions when we have spoken our minds to someone, telling them exactly what we feel, arid
then have found ourselves filled with feelings of 30
. Perhaps we should have kept our mouths shut?
The 21 greeting heard throughout the US on
January 1 had a counterpart in every land. The words may be different and the
dates may 22 , but the New Year greetings
everywhere __23 the
hope for renewed life and happiness.。
Down through history, primitive and civilized people 24
have celebrated the coming of a New Year. For ancient people
dependent upon the land, time revolved around the seasons. To this day, some
countries begin their year with vernal equinox (春分).。
As civilization advanced, a calendar based on the seasons
was 25 practical, and in 45 BC, the Roman
Emperor 26 that a new calendar be adopted which would correlate
the civil and the astronomical years. The Romans chose January 1 as the first
day of the year and so it remains in all parts of the Western world. 。
January symbolizes the theme of leaving the old 27
the new. When we see the old year out and noisily welcome the new
one, we are following the ancient
28 of burying the past
and frightening the evil that might threaten the future. The modern revelers (狂欢者)
who blow the toy horn and turn on the factory siren is erasing past 29
or failures with a noisy final gesture. Grown-ups and children alike
vow to break 30 their bad habits and resolve（决心）to
lead better lives.。
cave
drawings of animals and people are at least 25,000 years old.Making
your
mark with pen, ink, and paper is much more 21
, though. The first
pens
were probably 22 sticks or bones. But it wasn't
until about 700 AD
that
a particularly 23 writing tool came to be used. It was such
a great
tool,
in fact, that it dominated the _ 24 _ word for more than a thousand
years
after
that: the quill (羽茎) pen.
Our word
"pen", in fact, comes from the Latin word "penna", which
means"wing".
Feathers from any 25 bird were uses: geese, peacocks,
eagles and turkeys. Crow quills were used for very 26
work,such as accounting books.
The best quill pens were,
and still are, made from the five largest 27
feathers of domesticated geese. Right-handed people prefer pens made
of feathers from a goose's left wing. That way, the natural curve of the
feather won't cause it to poke them as they write. Left-handed people prefer 28
feathers.
Why feathers? Didn't
they have metal? Actually, pens made of silver, iron and steel were 29 , too. But the ink used at the
time contained acid. The ink ate away pens made of the only steel produced at
the time. When better steel ― and mass production of steel pen nibs(笔头)
― was developed in the mid-1800s, steel pens began _ 30 _ quills.
It all began five years
ago with a blog entry about a banjo.Mena
Trott,
23 of age, had recently 21 as an English major from college
and
was living with her husband Ben in San Francisco, passing her time
by
keeping a personal 22 diary. It was a blog about her
childhood, her
pets
and that sort of thing. One day, on a girly whim (少女般的突发奇
想), she wrote that she
wanted to buy a banjo but her husband 23
let
her.
Mena's friends and family, knowing that "Ben is the sweetest guy in
the
world", recognized the 24 . But all sorts of strangers
suddenly blogged back angrily, advising her to get a separate bank account, and
even to leave her 25 husband. Ms Trott was livid. "Why
can't people take a joke, and who are these people anyway?" she wondered.
It was the seed of a
profound insight: that the era of 26 media was ending and a new era of
"intimate media" had begun. Mr Trott had written some software to
make it easier for his wife to 27
her blog, and they
realized that other people might find it useful too. It was an instant success
upon its 28 onto the Internet in 2001, and
the Trotts have since built their company, called Six Apart, into the largest
independent 29 of blogging tools. Ms Trott is Six
Apart's president and public face, while Mr Trott runs the technical side of
things. Now, 30 , Six Apart's products are used by over
30 m bloggers around the world.
involved,
and no one is expected to 4 it perfectly.
Caregivers, particularly
spouses (配偶), should be
25 of their own deeds. I
encourage my patients' spouses to
26 their own outside
interests as much as possible. Spouses should connect with friends or clubs
they may have been involved with before the___27____. If the patient is
terminally ill, it is even more important for the caregiver to stay connected
toothers; these 28 will lend crucial support when the
loved one passes away. Taking time away from the patient, however, can be 29
hard and difficult. If it isn't safe to leave the patient alone,
don't 10 to ask other family members or
friends to visit on a regular basis.
。
