Questions 1-5
Do the following statements agree with the information given in Reading Passage?
True if the statement agrees with the information
False if the statement contradicts the information
NOT GIVEN If there is no information on this
Q1.
Integrated Pest Management has generally been regarded as a success in the across the US.
Q2.
Oregon farmers of apples and pears have been promoted as successful examples of Integrated Pest
Management.
Q3.
The IPPC uses scientists from different organisations globally
Q4.
Shaw mulch experiments produced unplanned benefits.
Q5.
The apple industry is now facing a lot of competition from abroad.
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TEST 3 - Terminated Dinosaur Era
A.
The age of dinosaurs, which ended with the cataclysmic bang of a meteor impact 65 million years
ago, may also have begun with one. Researchers found recently the first direct, though tentative, geological
evidence of a meteor impact 200 million years ago, coinciding with a mass extinction that eliminated half of
the major groups of life and opened the evolutionary1 door for what was then a relatively small group of
animals: dinosaurs.
B.
The cause and timing of the ascent of dinosaurs has have been much debated. It has been
impossible to draw any specific conclusions because the transition between the origin of dinosaurs and their
ascent to dominance has not been sampled in detail. "There is a geochemical signature of something
important happening, probably an asteroid impact, just before the time in which familiar dinosaur-dominated
communities appear," said Dr. Paul E. Olsen, a professor of earth and environmental sciences at Columbia
University's Lamont-Doherty Earth Observatory in Palisades, N.Y.
C.
Olsen and his colleagues studied vertebrate fossils from 80 sites in four different ancient rift
basins, part of a chain of rifts that formed as North America began to split apart from the supercontinent that
existed 230-190 million years ago. In the layer of rock corresponding to the extinction, the scientists found
elevated amounts of the rare element iridium. A precious metal belonging to the platinum group of elements,
iridium is more abundant in meteorites than in rocks.
D.
On Earth, a similar spike of iridium in 65 million-year-old rocks gave rise in the 1970s to the
theory that a meteor caused the demise of the dinosaurs. That theory remained controversial for years until it
was corroborated by other evidence and the impact site was found off the Yucatan Peninsula. Scientists will
need to examine the new iridium anomaly similarly. The levels are only about one-tenth as high as those
found at the later extinction. That could mean that the meteor was smaller or contained less iridium or that a
meteor was not involved—iridium can also come from the Earth's interior, belched out by volcanic
eruptions. Dr. Michael J. Benton, a professor of vertebrate paleontology at the University of Bristol in
England, described the data as "the first reasonably convincing evidence of an iridium
spike".
E.
The scientists found more evidence of rapid extinction in a database of 10,000 fossilized footprints
in former lake basins from Virginia to Nova Scotia. Although individual species cannot usually be identified
solely from their footprints — the tracks of a house cat, for example, resemble those of a baby tiger —
footprints are much more plentiful than fossil bones and can provide a more complete picture of the types of
animals walking around. "It makes it very easy for us to tell the very obvious signals of massive fauna
change," Dr. Olsen said. Because the sediment piles up quickly in lake basins, the researchers were able to
assign a date to each footprint, based on the layer of rock where it was found. They determined that the mix
of animals walking across what is now the East Coast of North America changed suddenly about 200
million years ago.
F.
The tracks of several major reptile groups continue almost up to the layer of rock marking the end
of the Triassic geologic period 202 million years ago, and then vanish in younger layers from the Jurassic
period. "I think the footprint methodology is very novel and very exciting," said Dr. Peter D. Ward, a
professor of geology at the University of Washington. He called the data "very required more research. Last
year, researchers led by Dr. Ward reported that the types of carbon in rock changed abruptly at this time,
indicating a sudden dying off of plants over less than 50,000 years. The footprint research reinforces
the hypothesis that the extinction was sudden.
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