D.Because they have created the smallest hovering robots with but a single pair of wings.
2.About Dr.Wood’s hovering robots, we can know that ________.
A.they are able to fly as precisely as a fly
B.they have nervous systems like insects
C.they fly stably with flightcontrol systems
D.they are insectlike and no bigger than a fly
3.What is the meaning of the underlined word “mimic” in Paragraph 5?
A.Increase.
B.Copy.
C.Practise.
D.Improve.
4.From the last paragraph we can infer that________.
A.what is needed may be a breakthrough in battery
B.these flying robots should be changed into smaller and lighter ones
C.flying around the laboratory is more important than flying outdoors
D.more research should be done on the size and weight of the flying robots
Ⅲ.书面表达
(2015·扬州高三调研)阅读下面短文,然后按要求写一篇150词左右的英语短文。
A teenager passed his driving test and was eager to drive his father’s car. His father agreed. He asked his son to drop him off before the son took the car for servicing. The father then wanted his son to pick him up at four in the afternoon so that they could go home together.
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