請依下文回答第 39 題至第 43 題: In recent years, the sudden disappearance of bees has concerned scientists. When many bees are absent from the earth,
this will have a great impact on people’s life because many kinds of food such as fruits, vegetables, meats, milk, and
eggs will be gone with bees. As a result, many scientists have already found out the reasons why many bees are
vanishing from the earth. Some of these causes include climate change and serious food shortages for bees. But a major
risk is the use of pesticides that can make bees become puzzled, bring less pollen home, and even unable to find their
way home. In some of the worst cases, pesticides can harm bees’ immune systems and make them endangered by the
threats of parasites. In order to save the bees and protect our environment, some people have already gone organic by
not using pesticides when planting flowers, vegetables, and fruits. And to our great delight, scientists have also
discovered the way to kill those parasites that are deadly to bees. Despite these great efforts made to save the bees, it is
still the increasing awareness of environmental protection that can eventually protect our bees from disappearing.
【題組】40 According to the passage, why is the absence of bees on earth so vital to humans?
(A)Because it tells us about the reason of climate change.
(B)Because it makes humans realize the usage of pesticides to bees.
(C)Because it takes away many sources of food from humans.
(D)Because it lets people know the importance of science.