【简答题】Honeybees are disappearing for unknown reasons around the United States.Last winter, bees disappeared from 23 percent of American beekeeping businesses.Causes of the phenomenon, however, have remained...
【单选题】If honeybees disappear due to CCD, food prices will
【单选题】母乳中的乙型乳糖可抑制下列哪种肠道细菌的生长?
【单选题】The problem of honeybees disappearing is called .
A.
colony disappearing disorder
B.
colony collapse disorder
C.
colony cooperation disorder
【简答题】阅读理解。 There are varieties of bee in the world. Scientists are interested in honeybees because of the 'language' they use to communicate with each other. Karl von Frisch, a professor from Austria, devo...
【简答题】When older honeybees take on tasks usually handled by younger bees, aging of their brains is effectively changed, a new study finds. The discovery suggests that in humans, social involvement ought to ...
【单选题】Honeybees are very important because they produce honey and .
【单选题】Which of the following is NOT true of honeybees?
A.
Queen bees and worker bees are both female.
B.
Worker bees are smaller than queen bees.
C.
Queen bees develop by being fed royal jelly.
D.
Worker bees produce eggs to maintain the hive population.
E.
Queen bees and worker bees are genetically identical.