Insulation from cold, (protect) against dust and (sand), and camouflage (are) among the (functions) of hair for animals

After his tong illness, the old man appeared so thin and ......... that a gust of wind might have blown him away.
A. flimsy B. frail C. withered D. faint

Billie Holiday’s rough………………emotional Voice made her stand out as a jazz singer
A. so
B. but
C. nor
D. still

Centuries of erosion have exposed………….rock surfaces in the
Painted Desert of northern Arizona
A. rainbowcolored
B. colored like a rainbow
C. in colors of the rainbow
D. a rainbow’s coloring

The taxi had to ......... because the traffic lights had turned red.
A. set up B. catch up C. cut up D. pull up

Some species of birds, when migrating divide (according to) their
age and sex
A. in keeping with
B. conforming to
C. in line with
D. in relation to

Arguing with the boss has considerably reduced his chances of promotion
A. He would definitely have been promoted by now if he hadn’t quarreled with the boss
B. The likelihood of his being promoted has significantly decreased because of his arguments with the boss
C. His promotion was certain until he had a dispute with the boss
D. He argued with the boss about why wasn’t considered for promotion

A (smile) can be observed, described and reliably (identify), it (can also) be elicited and manipulated under (experimental) conditions

You had better keep a box of matches ......... in case the lights go out again. =.
A. by hand B. handy C. in touch D. in the way

The impact of two vehicles can cause a lot of ……….to both
A. damage
B. damages
C. damaging
D. damagings