----- Don’t look down upon Bob. He has his own advantages.
-----Oh, yes. __________ others are weak, he is strong.
| A．Where | B．Though | C．When | D．If |
6. How can you call it home? It' s__________a house.
| A．hardly | B．rarely | C．badly | D．Occasionally |
5. When _______about one of the biggest concerns today, many people mention the sharp rise in prices.
| A．asking | B．to ask | C．having asked | D．Asked |
4. People begin to know that most environmental problems exist because necessary measures for preventing them _______taken in the past.
| A．are not | B．were not | C．hadn't been | D．wouldn't be |
3. To write a novel is not as easy as you imagine. It will take a lot of time and_____.
| A．power | B．force | C．energy | D．Strength |
2. Chile has experienced _________number of big quakes over its history, including______ most powerful one in the world that occulted in May 1960
| A．不填;a | B．the; a | C．the; the | D．a; the |