Each statue is of a person who has made a ___ in American history.
| A．difference |
| B．improvement |
| C．significance |
| D．importance |
Thedrug(药）didn't __________his health. In fact, itseemed to have no __________ at all.
| A．effect； effect |
| B．effect； affect |
| C．affect； effect |
| D．affect； affect |
If you stand here, you'll get a better __________ of theriver.
| A．sight | B．view | C．scene | D．scenery |
The acting is superb, as every feeling is __________fully.
| A．brought out | B．brought in | C．brought up | D．brought back |
It is widely accepted that young babies learn to do things because certain acts lead to __________.
| A．rewards | B．prizes | C．awards | D．results |
Be-fore a problem can be solved, it must be obvious __________ the problem itself is.
| A．what | B．that | C．which | D．why |