题目列表(包括答案和解析)

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24.  Wear a hat to p_____ yourself from the sun..

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23.  Watch out for dangers such as spiders, snakes or _______(有毒的)plants.

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22.  Hiking is fun and exciting, but you shouldn’t forget _______ (安全).

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21.  The basic e_________  you need for hiking is simple : good shoes, clothes and a backpack.

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20.  You will get close to nature and take _____(运动) at the same time.

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19.  Instead of spending your _____(假期)on a bus, in a hotel or sitting on the beach, you may want to try hiking.

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18.  Many of today’s travelers are looking for an unusual ______(经验) and adventure travel is becoming more and more popular.

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17.  They started to use English, but they also b ________ in  some words from their own languages.

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16.  In 1776 America became an ______ (独立的) country.

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15.  In total, for more than 375 million people English is their mother t____.

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