Dr. Josh has started a social enterprise ____ young people can get involved in helping the community.


  1. A.
    which
  2. B.
    where
  3. C.
    that
  4. D.
    when
B
考察定語從句。本題的先行詞是a social enterprise,定語從句的結(jié)構(gòu)非常完整，所以使用關(guān)系副詞，enterprise企業(yè)，單位；結(jié)合句意可知B正確。句意：Josa博士開辦了一家企業(yè)，在這里年輕人能夠參與幫助社區(qū)。
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You can’t change your energy cycle, but you can learn to make your life fit it better. Habit can help, Dr. Kleitman believes. Maybe you’re sleepy in the evening but feel you must stay up late anyway. Counteract(對抗)your cycle to some extent by habitually staying up later than you want to. If your energy is low in the morning but you have an important job to do early in the day, rise before your usual hour. This won’t change your cycle, but you’ll get up steam and work better at your low point.

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       B．help you to control your temper early in the day

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