1 . Self-driving ears will rely on cameras, sensors and artificial intelligence(人工智能) to recognize and ________(response) to road and traffic conditions. (所给词的适当形式填空)

2 . Franklin, along with many other scientists, has inspired us and taught us that scientific experiments are important in order to ________ ________ ________(推定真理) and to contribute towards later scientific discoveries and inventions. （根据汉语提示完成句子）

3 . This insight grew from the determined attitude of a six-year-old boy who had the courage and perseverance to ________ his dream ________ ________ (实现). （根据汉语提示完成句子）

4 . Some have even questioned the story about the apple that fell on Newton's head and led him to ______ ______ ______ (想出、提出) his theory of gravity. （根据汉语提示完成句子）

5 . With a large amount of work ______, the chief manager couldn’t spare time for a holiday.

A．remained to be done	B．remained being done
C．remaining to be done	D．remaining to do

6 . When asked why he went there, he said he was sent there _____for a space flight.

A．training

B．being trained

C．to have trained

D．to be trained