题目内容
3．The new treatments ______by Norman Bethune helped a number of soldiers．（ ）| A． | invent | B． | invents | C． | inventing | D． | invented |
分析 这种被诺尔曼．白求恩发明的新疗法帮助了很多士兵．
解答 答案：D．根据关键词by Norman Bethune可知是被动的含义，所以动词用过去分词形式，invented by Norman Bethune是后置定语修饰主语the new treatments，故选D．
点评 本题考查分词的用法，解决此类问题的关键是掌握分词在不同句子中所作的成分，达到熟练掌握的目的．
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Trip 1Black Bear Count
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Trips
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There have been fires in this area in the past few years and the Office of National Park is not sure how many black bears are still living．So the Office has asked for volunteers to help count them．The trip will last three hours．This activity will start on May 8．You don't have to pay．
Trip 2Garland Valley
Bring your drink and lunch for this walk in a beautiful area of the Blue Mountains．Many wild animals live in this area，including many rare（罕见的）birds．This is a great walk for bird lovers．The trip lasts four hours．It will be on May 15．The cost is not high，only 15dollars．
Trip 3Flashlight Adventure
Put on your warm clothes，bring a flashlight（手电筒），and come for a night walk along the Dungong Valley in the National Park．A guide will lead the tour．You will see many animals which can only be seen at night on this trip．This walk will be on May 22．You have to pay 12dollars for the walk．This walk lasts two and a half hours．，
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| Black Bear Count | （57）count how many black bears are still living． | （58）free/don't have to pay | 3hours | May 8 |
| Garland Valley | See rare birds | 15dollars | （59）four hours | May 15 |
| Flashlight Adventure | See night animals | 12dollars | 2.5hours | （60）May 22 |
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