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  3. What’s the main idea of the passage? [originaltext]Like people who share news vi

What’s the main idea of the passage? [originaltext]Like people who share news vi

游客2025-01-17  0
问题 What’s the main idea of the passage?
Like people who share news via Twitter, Facebook and Linkedln, cells, too, make use of multiple modes of information exchange. Some send out hormones, which travel far and wide via the bloodstream; others emit neurotransmitters, which carry signals between one neuron and another. But virtually all cells network with their neighbors via extensive collections of channels that directly connect the inside of one cell with the inside of the next.
选项 A、The similarities between cells and Facebook.
B、Cells communicate with each other in many ways.
C、How hormones and neurotransmitters travel.
D、How Twitter and LinkedIn exchange information.
答案 B
解析 本文的主旨是细胞可用多种模式进行信息互换(information exchange)，信息是上义词，在下文中得到了具体化，用两个下义词来体现：荷尔蒙(hormones)和神经递质(neurotransmitters)。互换(exchange)一词在文中多次用近义词和下义词来表示，如send out、travel、emit、carry、network和connect。 neurotransmitter，医学、生物学名词，“神经递质”。在化学突触传递中担当信使的化学物质被称为递质，神经递质是神经系统中的活性物质，在神经传导中担当信使。
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