China sent up two manned spaceships and they were also great scientific _______ in the world.
| A．campaigns | B．surprises | C．achievements | D．discoveries |
Great attention must be paid _______ welfare, especially in the poor area.
| A．develop | B．to develop | C．to developing | D．Developing |
Today CCTV offers a great _______ of programs to meet different needs and _______.
| A．variety; tastes | B．many; interests | C．deal; likes | D．number; habits |
Careful surveys have showed that audience _______ teachers and students are more likely to take seats _______ directed.
| A．1ike; that | B．as; that | C．1ike; as | D．as; like |
Beginning college is exciting：many of us can be easily excited by _______ details of running _______ well-balanced life.
| A．／; the | B．the; a | C．／; a | D．the; ／ |
Only in 1996 the determination and patience of the scientists with a breakthrough at last .
| A．were ; paid off | B．did; pay back | C．did ; pay off | D．did ; pay for |