B) doubt the claims of evolutionary biologists who cite monkeys as human ancestors.
C) establish a link between two groups that shows how significantly one of those
groups has changed.
D) answer the question posed in the second half of the sentence.33 .In Passage 1, the reference to “two free limbs” (line 9) serves to
A) emphasize that the two limbs used for walking have grown much stronger.
B) explain why animals that walk on all fours cannot go grocery shopping.
C) criticize bipedal animals for not taking full advantage of all of their limbs.
D) imply that bipedal animals can use some of their limbs for higher-order functions.34 .As used in line 16, “manually” most nearly means
A) without technology.
B) by hand.
C) with difficulty.
D) by humans.35 .In discussing the nature of human handiness, the author of Passage 1 suggests that
A) humans’ intellectual ability is inseparable from skillful use of hands.
B) humans’ hands were useless for a long while before humans developed sufficient
intellectual sophistication.
C) human dexterity took approximately 4 to 7 million years to develop.
D) humans would be just as intelligent if they wrote with their feet rather than their
hands.36 .Which choice provides the best evidence for the answer to the previous question?
A) Lines 1-3 (“One...four”)
B) Lines 14-18 (“They...do”)
C) Lines 24-30 (“The...dexterity”)
D) Lines 30-35 (“Human...fours”)37 .As used in line 53, “brook” most nearly means
A) stream.
B) allow.
C) flow.
D) block.38 .The third paragraph of Passage 2 (lines 54-65) primarily serves to
A) question research methods that would put monkeys on treadmills.