There are some 65 species of New World monkeys. Many of these have a very useful anatomical adaptation lacking in their old world counterparts that curious “fifth hand’’, the prehensile （适手抓住的）tail. And in a few species the gripping tail has developed to such as extent that is actually has “fingerprints” on the tip. While of course a tail is not-accepted with fingers, it can sometimes be even more useful than an arm or a leg. A spider monkey’s tail, for instance, is longer than its head and body combined, and is frequently used instead of a hand to grasp distant objects. Other monkeys less fortunate are forced to relegate at least one limb to support while they feed, whereas monkeys endowed with prehensility can hang by their tails while they feast with both hands and feet. A few New World monkeys have also evolved arms and shoulders that are suitable for swinging hand over hand through the trees like the Asiatic gibbons.1.The passage mainly discusses（ ） .2.The author probably believes that a monkey uses its prehensile tail especially for3.In the second sentence, the word “their” refers to（ ） .4.It can be inferred from the passage that the Asiatic gibbons and certain New World monkeys are similar in what respect?5.Which of the following statements is NOT true according to the information in the passage?

A.certain evolutionary advantages of New World monkeys B.feeding habits of the spider monkey C.the development of arms and shoulders in New World monkeys D.some anatomical adaptations of Asiatic gibbons
问题2：
A.running over a grassy plain B.supporting itself while eating C.swimming across a river D.defending itself against enemies
问题3：
A.New World monkeys B.Old World monkeys C.spider monkeys D.Asiatic gibbons
问题4：
A.The length of their tails B.Their mating habits C.The ability to grip with their feet D.Their upper body structure
问题5：
A.Some monkeys use their hands to grasp objects. B.A spider monkey has a very long tail. C.A prehensile tail has fingers. D.Asiatic gibbons can swing through trees.