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    A warm blanket is the ideal sleep aid for a freezing winter night. The right blanket can warm your bones but the wrong one can affect your sleep. I asked experts for advice on picking the perfect blanket for a good night’s sleep. Here’s what they told me.
    When it comes to sleep temperature, experts recommend following the principle: not too cold, not too hot, but just right. “People seem to sleep best at temperature between 62 and 70 degrees F,” says Dr. Alice Hoagland. When the surrounding temperature falls too low, it can rouse you from sleep. A good blanket helps drive the coldness away.
    At the other extreme, overheating yourself can affect your sleep as well. “Core body temperature typically drops during the first four hour’s of sleep,” says Dr. Hoagland. This decline in body temperature helps you fall asleep and stay asleep.
    “In medical care, weighted blankets are one of our most powerful tools for helping people who are anxious, upset, and possibly losing control,” says Dr. Karen Moore. These special blankets are filled with weighted pellets. Weighted blankets are also marketed for general use as an aid to sleep and relaxation. Like a firm hug, weighted blankets help us feel safe.” This is the reason why many people like to sleep under a blanket even in summer.
    “If you want to try this type of blanket, the best weight depends on your body size and personal preference. However, 15 to 30 pounds is typical for adults,” Moor says. She adds that weighted blankets are not recommended for those recovering from surgery.
    “People can also have serious preferences for a particular blanket,” says Dr. Hoagland. “Regularly using a favorite blanket for sleep can help to develop a conditioned response so that sleep is quicker.” In fact, many sleep centers ask patients to bring their own blanket and pillow from home, which helps them fall asleep more easily.
    小题1:The author wrote the passage mainly to tell us _____.
    A．the importance of blankets
    B．how to choose the perfect blanket
    C．different materials used to make blankets
    D．the history and usage of blankets
    小题2:The underlined word “rouse” in Paragraph 2 is the closest in meaning to “______”.
    A．wake upB．take upC．make upD．pick up
    小题3:What do we know from the passage?
    A．Body temperature rises when we fall asleep
    B．The perfect sleep temperature should be above 70 degrees F.
    C．Weighted blankets should be at least 30 pounds.
    D．People are advised to use their own blankets.

    小题1:B
    小题2:A
    小题3:D

    试题分析：考察说明文。本文讲述的是如何选择合适的睡觉的毯子，以及与此有关的各方面的情况介绍。
    小题1:B 主旨大意题。根据文章主题段第一段最后一句I asked experts for advice on picking the perfect blanket for a good night’s sleep. Here’s what they told me. 可知本文是关于选择合适的毯子的建议。故B项正确。
    小题2:A 推理题。根据本句When the surrounding temperature falls too low, it can rouse you from sleep.可知当周围的温度下降太快，会让人们从睡眠中苏醒过来。故该词是指A项的意思。
    小题3:D 细节题。根据文章最后一句In fact, many sleep centers ask patients to bring their own blanket and pillow from home, which helps them fall asleep more easily.可知作者建议人们使用自己的毯子。故D正确。
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