_____H7N9 is a deadly virus, it is still safe to eat thoroughly-cooked chicken.
| A．Until | B．While | C．If | D．Since |
In the United States, there is always ____ flow of people to areas of ______ country where more jobs can be found.
| A．a; the | B．the ; a | C．the; the | D．a; a |
（届江西省重点中学盟校高三第二次联考英语试卷） 21. To us all in China, _______ experience of taking the college entrance examination seems an important way to judge whether one’s life is ______ complete one.
| A．the; a | B．an; a | C．the; the | D．an; the |
There is small temple on the island, which can only be reached by water.
| A．a; 不填 | B．a; the | C．the; the | D．the; 不填 |
（重庆一中高三下第三次月考）1. — Can you finish the novel in _____ hour or two?
— You must be joking; it’s out of _____ question.
| A. an; the |
B. /; / |
C. an; a |
D. an; / |
While he was investigating ways to improve the telescope, Newton made______ discover which completely changed______man’s understanding of colour.
| A．a…不填 | B．a…the | C．不填…the | D．the…a |