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Dozens of honey bees, which usually feed on wild flowers after leaving their hives (蜂房) in the campus gardens, were tricked into the cottage to feed from an artificial flower. Only one bee was allowed in at a time, and their visits to artificial flowers were videoed and timed under different fan speeds, which mimicked (模拟) calm and windy days.
But the researchers are trying to help them: it is a controlled experiment that reveals how high wind speeds significantly reduce the efficiency of their feeding.
With no wind, the bees on average took nectar(花蜜) from 5.45 flowers during their 90-secondtime trial. When wind speeds were increased, this fell to an average of 3.73 flowers.Researchers also examined the indirect impact of higher winds by moving the flowers.
The findings reveal that, while flower movement did not appear to have an effect on the bees, the movement of air from the fans made them much more hesitant to take off from a flower, with time taken ranging from an initial0.05 seconds to 54 seconds.
Georgia Hennessy, lead author of the research,said that one possible reason for the wind causing hesitancy was that small increases in wind speed reduced the bees’ body temperature, so they require longer to warm up the flight muscles required to take off."
With wind speeds predicted to increase in the years ahead, understanding how we can help bees in a changing climate is becoming evermore pressing.Although we can’ t do much to control or stop the wind, we can take steps to reduce its impact on bees, such as placing hives in sheltered locations said Hennessy.
The UN's Food and Agriculture Organization warned last year that the decline in global bee populations was a“threat to global food security and diversity".
Dave Goulson, professor of biology at the University of Sussex, said:“Bees already face many pressures in the modern world, such as loss of habitats and exposure to pesticides(杀虫剂)and a great many are in decline. Coping with increasingly windy weather under climate change may be the final straw.
1.What task did the researchers set for the bees?
A.ldentifying the new route.
B.Surviving in extreme conditions.
C.Feeding under different wind speeds.
D.Distinguishing various kinds of flowers.
2.What probably makes a bee hesitant to take off from a flower?
A.A full stomach.
B.Loss of balance.
C.Changed flower positions.
D.Reduced body temperature.
3.What can we do to reduce the impact of high winds on bees?
A.Stop the wind.
B.Restore their habitats.
C.Address climate change.
D.Prohibit the use of pesticides.
4.Which of the following can be a suitable title for the text?
A.Loss of bees causes failure of food crops.
B.Bees are on the decline as global heating worsens.
C.Bees may struggle in winds caused by global warming.
D.Artificial flowers are used for threatened bee populations.

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