Today we benefit from countless inventions and innovations.It’s hard to imagine driving without Garrett A.Morgan’s traffic light.It’s equally impossible to picture a world without Katherine J.Blodgett’s innovation that makes glass invisible.Can you picture life without clear windows and eyeglasses?
4.By mentioning “traffic light” and “windshield wiper”,the author indicates that countless inventions are
.
A.beneficial,because their inventors are famous
B.beneficial,though their inventors are less famous
C.not useful,because their inventors are less famous
D.not useful,though their inventors are famous
答案 B
解析 推理判断题。由文章最后一段第一句“Today we benefit from countless inventions and innovations.”可知信号灯和雨刮器这些小的发明使我们受益。由第一段可知信号灯和雨刮器等的发明者不怎么出名,故选B项。
5.Professor Joan McLean’s course aims to
.
A.add colour and variety to students’ campus life
B.inform students of the windshield wiper’s invention
C.carry out the requirements by Mountain University
D.prepare students to try their own inventions
答案 D
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