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2.Many teachers believe that hands-on experiences is the (61)best (good) way to learn.A group of students in the United States are putting that belief to the test.They (62)successfully(success) designed and built a robot for discovering unexploded mines(63)at the bottom of the sea.Students made the robot (64)to answer  (answer) a challenge from the U.S.Department of Defense.
The students recently tested the underwater vehicle (65)called (call) Perseus II in a 95-meter-long tank of water at the Stevens Institute of Technology.
The robot costs about 15,000to build.The students use a video game controller to direct its(66) movements (move) in the tank.What's more,devices know as Japters (67)enable (able) the robot to go up,down and toward its target in the water.Video cameras on the robot send images back to a computer through a 13-meter-long cable.Perseus II also has (68)aset of lasers(激光),which are used to measure the size of an object.
The robot is the creation of five undergraduate students.For over six months,they worked up(69)to20hours a week to design and build Perseus II.
DeLome supervised the project from the(70)beginning(begin) to the end.He says the specialized requirements of robot were demanding.

分析 许多老师认为实际操作是最好的学习方式,一群美国的学生对此进行了检测.

解答 61.best  考查形容词最高级.根据题意可以推测最好的学习方法是实践操作,故‘good'最高级形式为"best".
62.successfully 考查词性转换.根据此句看出,所填词用来修饰"designe"为动词,故用副词"successfully"来修饰.
63.at  考查介词."at the bottom of"为固定短语,意为"在…底部".
64.to answer  考查不定式.根据上下文,此处不定式表示目的状语,意为"为了响应美国国防部的一个挑战".
65.called  考查非谓语动词.本句的主干为"The students recently tested the underwater vehicle",故"called"为过去分词做定语修饰"the underwater vehicle"表示被动,即"被称做…".
66.movements  考查词性转换.由"its"可知后需加一个名词,故"move"的名词形式为"movements".
67.enable   考查动词.该句主语为"devices","know as Japters"为过去分词修饰主语,故所填词为句子谓语,将"able"变成动词形式"enable"意为"使…能够做…".
68.a  考查冠词.考查固定短语"a set of"意为"一套…".
69.to  考查介词.up to 多达.
70.beginning   考查名词.此处"the"后需加一个名词,另外,"from the beginning to the end"为固定短语,意为"从开始到最后".

点评 语法填空题.此题话题学生不太熟悉,可能难度有点.但是考试需首先浏览全文,然后联系上下文并注意一些词性的相互转换,以及一些固定短语的搭配.

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