Swimmers must be very strong in order to build up speed because of the high resistance(阻力) of the water. Runners, , must struggle against the heavy resistance of the air and ground.
| A．generally | B．similarly | C．naturally | D．probably |
Only then ________how much damage had been caused.
| A．she realized | B．she had realized |
| C．had she realized | D．did she realize |
Memories ________on him as soon as he met the friend whom he had not heard from for over thirty years.
| A．crowded in | B．resulted in |
| C．joined in | D．got in |
The shirt is so expensive. Can you reduce the price ________a third?
| A．to | B．by | C．of | D．at |
If we are not ________the progress we have made，we will have greater success.
| A．interested in | B．strict in |
| C．popular with | D．content with |
Can you ________ your sister from that group of girls?
| A．pick up | B．pick out | C．bring up | D．bring out |