Finding information on the Internet is easy. The ______ is how you can tell whether the information is useful or not.
| A．ability | B．competition |
| C．challenge | D．knowledge |
If you just spend time________advantages and disadvantages，you may get nothing in the end.
| A．matching | B．balancing |
| C．observing | D．examining |
I have no________with people who are always complaining of their misfortunes.
| A．devotion | B．belief | C．patience | D．balance |
Shangri-la, a place of mystery and beauty, is indeed a heavenly world ________ people live in perfect harmony with nature.
| A．that | B．which | C．when | D．where |
________ he is into the video game, it’s hard for him to think of anything else — all his attention is on winning the game.
| A．Unless | B．Whether | C．Once | D．Where |
It’s wise of you to________your father’s advice when you come to any difficulty.
| A．ask | B．seek | C．try | D．attempt |