361. When water is scarce (as is often the case on a mountain) , lichens may become dormant and remain in that condition for prolonged periods of time.

The word "prolonged" is closest in meaning to which of following?

(A) precise

(B) extended

(C) approximate

(D) regular

362. For decades, scientists wondered how the offspring of an alga and a fungus got together to form a new lichen; it seemed unlikely that they would just happen to encounter one another.

The word "encounter" is closest in meaning to which of following?

(A) lose

(B) support

(C) meet

(D) create