试题与答案

与向量a=(12,5)反向的单位向量是______.

题型:填空题

题目:

与向量
a
=(12,5)
反向的单位向量是______.

答案:

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参考答案:C解析:Foot soaks macerate the skin and increase the risk for breaks. Water-soluble lotions are recommended to moisturize the feet. Nail files are preferred over nail clippers or scissors. Antiperspirants may be used when foot perspiration exists.

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I was on my way to the Taiyetos Mountains. The sun was setting when my car         31   (break) down near a remote and poor village. Cursing my misfortune, I was wondering where I was going to spend the night when I realized that the villagers who had gathered around me were arguing as to  32    should have the honor of receiving me  33   a guest in their house. Finally, I accepted the offer of an old woman who lived alone in a little house. While she was getting me  34      (settle) into a tiny but clean room, the head of the village was tying up his horse to my car to pull it to  35       small town some 20 kilometres away   36      there was a garage.

I had noticed three hens running free in my hostess’s courtyard and that night one of them ended up in a dish on my table.  37            villagers brought me goat's cheese and honey. We drank together and talked   38            (merry) till far into the night.

When the time came for me to say goodbye to my friends in the village, I wanted to reward the old woman 39           the trouble I had caused    40           .

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