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Very early on the morning of June 29, 1991, a heavy fog hung over the wheat field in southern England.
Carrie and Morgenstern were watching the field. Although they could see nothing through the thick fog, they
kept their cameras running.
By 6a. m. the fog began to lift. A remarkable pair of circles was seen in the wheat field. Rushing down
the hill, they found that the wheat within the two circles had been flattened into precise clockwise swirls.
Stalks (麦秆) were bent but not broken. Outside the circles the wheat was untouched.
It had been silent all night. Although the field was muddy, there were no footprints or other marks. The
circles seemed to have come from nowhere. "I can't explain it," admits Mike Carrie.
Carrie is not alone, Since the early 1980s, more than 2000 circles have appeared in farmers' fields. Most
circles form at night between May and August.
Some believe the circles are caused by hedgehogs (刺猬) or deer. Others attribute them to the UFOs.
"The circles are messages given by those who come from outer space," says Michael Green. "Perhaps
they are trying to get in touch with us."
Pat Delgado has made researches on crop circles since 1981. He believes that they are caused by "some
form of earth energy". In several circles, he recorded an unusual noise which seemed to have been made by
some "electronic".
Most scientists think that there's no scientific basis to back up Green's or Delgado's theories. Some of
them say, "We think they're nothing but a hoax (骗局)."
In September 1991, Doug Bower and Dave Chorley claimed that since 1979 they had made circles
throughout southern England to fool people who believed in LIFO. "We got down on our hands and knees and
used an iron bar, so that it looked as though a UFO bad landed there."
Since the early 1980s, Dr Terence Meaden has visited more than 1000 circles. Now he thinks he may have
the answer. He believes true crop circles are made by vortex. When it hits the ground, it flattens the crop in
spiral patterns. Each northern summer, these surprising formations turn British cornfields into artists' paintings.
"Crop circles are an amusing part of the silly season-though farmers might not agree," says Royal Society's Sir
Francis Graham-smith.
1. On the morning of June 29, 1991, Carrie and Morgenstern hoped to _____.
A. record an important thing
B. see something funny
C. find nature's secret
D. draw a conclusion
2. Mike Carrie was _____ at what he saw.
A. satisfied
B. amused
C. surprised
D. interested
3. Most scientists consider the supernatural theories of Green and Delgado are _____.
A. meaningful
B. reasonable
C. instructive
D. against the law of science
4. The crop circle phenomenon _____.
A. has come to an end
B. makes scientists puzzled
C. is a bad thing
D. makes farmers amused
5. What is the best title of this passage?
A. A Clever Hoax
B. A Thick Fog
C. Crop Circles
D. Earth Energy
