2. 外语
  3. If our brains were computers, we’d simply add a chip to upgrade our memory. The human brain, therefore, is more【M1】______ comple

If our brains were computers, we’d simply add a chip to upgrade our memory. The human brain, therefore, is more【M1】______ comple

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问题     If our brains were computers, we’d simply add a chip to
upgrade our memory. The human brain, therefore, is more【M1】______
complex than even the most advanced machine, so improving
our memory isn’ t quite so easy. Just as it takes effort
to build physical fitness, so is boosting brain power.【M2】______
    A strong memory depends on the health and vital of your【M3】______
brain. Whether you’re a student studying for final exams, a
working professional interested in doing all he can to stay【M4】______
mentally sharp, and a senior looking to preserve and enhance【M5】______
your intelligence as you age, there are lots of things from【M6】______
which you can do to improve your memory and mental
performance. They say that you can’t teach an old dog new
tricks, but when it comes to the brain, scientists have
discovered that this old proverb simply isn’t true. The human
brain has astonishing ability to adapt and change—even into【M7】______
older age. This ability is known as neuroplasticity. With the【M8】______
right stimulation, your brain can form new neural pathways,
alter existing connections, and adapt and react in ever-changing ways.
    The brain’s incredible ability to reshape itself hold true【M9】______
when it comes to learning and memorizing. You can harness【M10】______
the natural power of neuroplasticity to increase your cognitive
abilities, enhance your ability to learn new information, and
improve your memory.
【M1】
选项
答案therefore—however
解析 语篇错误。根据上下文语义来判断，句间的逻辑关系应为转折关系。前面一句说到“如果我们的大脑是电脑。我们只需添加一个芯片就可以提升记忆。”本句则说“人脑比最高级的机器都复杂”，语意上出现转折，重在强调后者，而且此处用逗号隔开，用作插入语，故最好用however。therefore表示因果关系，用在这里不合适。
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