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同时小小以前很喜欢找你闲聊,可后来你想利用业余时间学电脑编程,几次推托了小的邀请,以后小就不来找你闲聊了。这种行为属于( )。
A.
正强化
B.
躲避
C.
自然消退
D.
惩罚
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【单选题】According to the professor, which is the most famous pollinator?
A.
The honeybees.
B.
The long-nosed bats.
C.
The monarch butterflies.
D.
The birds.
【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
A.
rise
B.
fall
C.
collapse
【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?
A.
乳酸杆菌
B.
大肠杆菌
C.
链球菌
D.
金葡菌
E.
双歧杆菌
【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 .
A.
sting people
B.
cure allergies
C.
pollinate flowers
【判断题】销售出库是销售业务处理的必需环节。
A.
正确
B.
错误
【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.
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