While he was investigating ways to improve the telescope, Newton made ______ discovery which completely changed ______ man’s understanding of colour.
| A．a; 不填 | B．a; the | C．不填; the | D．the; a |
Polar explorers have to be extremely _____ to bear the climate and other hardships.
| A．tough | B．rough | C．difficult | D．brave |
The design of this architecture has to _____ all ages and social groups, which should be made clear to whoever is to design it.
| A．fit in with | B．stand for | C．go for | D．appeal to |
When John was arrested for drunken driving, he expected to lose his driving license, but he was _____ with a fine.
| A．let through | B．let down | C．let off | D．let out |
The reason why George is looking for another job is that he’s _____ his manager’s complaints.
| A．put up with | B．come up with | C．kept up with | D．fed up with |
In this country, the quality of food product is _____ according to the highest international standard.
| A．graded | B．confirmed | C．marked | D．ranged |