Already bees, which pollinate most of the world’s crops, reduce in such a great decline that has never been known before in Britain and across much of the globe. At least a quarter of America’s 2.5 million honey bee colonies have been mysteriously wiped out by colony collapse disorder(CCD),where hives are found suddenly deserted.
The crisis has now spread to Europe. Politicians insist that CCD has not yet been found in Britain, but considering the present number of bees, the agriculture minister Lord Rooker has sent the warning, “The honey bee population could be wiped out in 10 years.”
Although the researchers are not certain whether this is the real cause of CCD, they say that pollution is making life more difficult for bees and other insects in many ways.
68. In what way does pollution prevent flowers from attracting bees?
A. By shortening the distance traveled by the scent molecules of flowers.
B. By disturbing the bees’ ability to attract mates.
C. By weakening the bees’ ability to fight against enemies.
D. By stopping flowers from giving off fragrance.
69. What harm does the decreasing number of bees do to human beings?
A. It will cause humans not to get enough honey.
B. It will reduce the food supplies for the world.
C. Humans will have to depend on other insects to pollinate plants.
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