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One sure sign of the fall season is the
sight of scarecrows everywhere. Scarecrows are used for practical reasons by
farmers, and as decorations by many people. You can find scarecrows on farms and
in yards, and also on T-shirts, sweatshirts, and other clothing.
Scarecrows were first used over 2000 years ago by farmers who needed to
keep birds out of their fields. Crows and blackbirds were always eating the
vegetable crops grown by farmers. The farmers had to do something to stop the
crows from coming into the fields. They made these human-like objects out of
anything they could find. They used sticks, hay, and pine straw, and dressed the
scarecrows in old clothing. The farmers tried their best to make these creations
look like real people in a field or garden. They hoped that the crows would see
the "person" standing in the field and be afraid of it.
Scarecrows are still seen today, but most farmers use other things now to
get rid of pesky animals. Scarecrows are more often a decoration, and a way to
mark the beginning of fall.
单选题So seriously ______ in the accident that he was sent to hospital at once. [A] he was wounded [C] was he hurt [B] he did injure [D] did he hurt
单选题In those days she was always lost in thought, so that she had to be called three or four times ______ she came to her dinner. A. until B. after C. when D. before
单选题 A strong wind can be a dangerous thing—sometimes it is
powerful enough to knock you down. But to some plants, the wind is a source (来源)
of new life, carrying them or their spores (孢子) thousands of miles.
A NASA satellite called QuikSCAT has discovered highways of wind over the
Earth's oceans. Scientists believe these invisible roads may explain why many
nonflowering plants grow where they do. The satellite is able
to send microwaves (微波) from space to the surface of the ocean. The pattern of
signals (信号) that come back shows which way the winds are blowing.
Using this {{U}}data{{/U}}, the scientists studied a group of islands in the
southern hemisphere (半球), near Antarctica. Winds tend to blow anticlockwise
(逆时针) in this area, but there are lots of local differences.
When the researchers compared these local patterns to botanical (植物学) data, they
found that the wind had an important effect on where species (品种) of mosses (苔),
lichens (地衣), and other nonflowering plants grow. For example,
Bouvet Island and Heard Island share 30 percent of their moss species, 29
percent of liverworts (叶苔), and 32 percent of lichens—even though they are 4,430
kilometers apart. However Gough Island and Bouvet Island, separated by just
1,860 kilometers of sea, share only 16 percent of mosses and 17 percent of
liverworts. They have no lichens in common. Ferns (蕨类植物) and
flowering plants don't travel as well in the wind, so they don't show the same
kinds of distribution (分布) patterns.
单选题If you want to buy a new jacket, you have to go to ______.
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听第10段材料,回答第17~20题。
单选题Zhang Hong is said ______ by heart 2000 words up to now.
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单选题The police couldn't see which ______ the car went.A. pathB. wayC. sideD. road
单选题According to the leaflet, better public transportation is very effective in reducing pollution because_______.
单选题______ in her best skirt, the girl tried to make herself ______ at the party.
单选题She died after a long ______
单选题I didn't ______the meeting because I was ill.A. joinB. enterC. attendD. appear
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单选题The witness's statement about the accident was very ______; we knew almost everything about it now.A. especialB. specificC. exceptionalD. special
