Chatting online can be _____fun, but kids must be sure they stay safe on _____web.
| A．不填; a | B．a; the | C．不填; the | D．a; a |
—Who do you think we should offer_____job?
—Of course Simon. I can’t think of_____person for the position.
| A．the; a better | B．a; a good | C．a; the good | D．the; the better |
Dina El-Mogazi, ____ director of _____ Campus Greening Department, says courses in ____ variety of disciplines(科目)will achieve the requirement.
| A．/;the;/ | B．the;/;a | C．/;the;a | D．the;the;the |
Developing a low-carbon economy is__________global topic and the world needs
__________clean revolution with participation from everyone, decision makers to the children.
| A．a；the | B．a；a | C．the；a | D．／：the |
Since its entry into ________ Chinese market, Google has been enjoying ________ legal market access and national treatment.
| A．the; a | B．不填; 不填 | C．a; the | D．the; 不填 |
______ World Exposition in 2010 is the first registered World Exposition in ______ developing country.
| A．/; a | B．The; a | C．The; / | D．/; the |
No one believes the small dark lab is ___ home to so many great inventions at___ first sight.
| A．the; the | B．不填；the | C．the；不填 | D．不填；不填 |
Last month, American scientists started working on _____ project aimed at improving _______ ability to predict earthquake.
| A．the; a | B．a; an | C．the; an | D．a; the |
Jack had____________feeling of excitement when hearing his article had been published in ______school magzine。
| A．the ；a | B．a ；the | C．/ ；the | D．the ；/ |
Since then, the boy hasn’t missed ____ game of David Beckham, ___ famous football player
| A．a; the | B．a; a | C．the; the | D．the; a |