With many major economic problems________ to be solved, there is no point predicting the growth rate of this year now.
| A．remaining | B．remained |
| C．have remained | D．having remained |
Believe in yourself and work hard and ______ your final goal will be achieved.
| A．therefore | B．so | C．thus | D．by this way |
It still puzzles today’s scientists ______ some mammals produce their young ______ others lay eggs to produce their offspring( 后代)
| A．that; while | B．why; while | C．how; when | D．what; as |
-- Mum, I failed again in today’s examination.
--Oh, ________. The world is not _______.
| A．come up; at its end | B．Cheer up; in the end |
| C．Look up; at the end | D．Take it easy; at an end |
______what many people thought, the graduate came here not to ______ fame or money but the true value of life.
| A．On the contrary with; look for | B．Contrary to; seek |
| C．Opposite to; search | D．To the contrary of; hunt for |
Her genuine love for you may _______ what she has sacrificed (牺牲)to make you succeed.
| A．stand for | B．count for | C．account for | D．speak for |