Choose from the alternatives lettered A to D one which is nearest in meaning to the underlined word or expression in each sentence.

21.The velocity of light could not be determined until quite recently.

A. colour

B. speed

C. power

D. movement

22.All the prospective investors attended the meeting.

A. rich

B. enterprising

C. selected

D. potential

23.Only humans have the innate ability to cook their food before eating.

A. intimate

B. real

C. substantial

D. inborn

24.Whenever avarice rears its ugly head, it should be avoided.

A. antagonism

B. greed

C. selfishness

D. obsession

25.After days of heavy rains, the islanders feared a possible inundation.

A. submerging

B. recovery

C. flooding

D. loss

26.Mary succeeded through perseverance.

A. persistence

B. knowledge

C. accomplishment

D. inspiration

27.Confidence tricksters can dupe only gullible people.

A. careless

B. naive

C. greedy

D. humble

28.The weather is serene today.

A. friendly

B. intense

C. great

D. calm

29.A swarm of locusts caused widespread damage to the crops.

A. deterioration

B. destruction

C. wreckage

D. spoilage

30.Many people are unable to cope with escalating medical expenses.

A. ascending

B. rising

C. heightening

D. expanding