The radiation amount of a mobile phone for two half-hour periods per day is equal to ________ to an X-ray for ten seconds.
A.expose | B.exposing | C.exposed | D.being exposed |
. According to some doctors, one of the ways to prevent us from growing old is to make sure
that our brains get enough___.
A.performance | B.exercise | C.experience | D.sport |
. We are faced with the necessity to recognize that having more people implies a lower standard of living.
A.readily | B.smoothly | C.unavoidably | D.deliberately |
Although many people view conflict as bad, conflict is sometimes useful _______ it forces people to test the relative merits of their attitudes and behaviors.
A.by which | B.to which | C.in that | D.so that |
— I phoned you at 7 yesterday evening but nobody answered.
— Oh, I ________ my dog in the park then.
A.walked | B.was walking | C.had walked | D.would walk |
Paris________ be a wonderful city but it’s not somewhere I’d like to live.
A.might | B.would | C.must | D.can |