自测试题三（9）

　　true of the structure of cycad cones？

　　（A） The structure of cycad cones provides conclusive

　　evidence in favor of one particular explanation

　　of cycad pollination.

　　（B） The structure of cycad cones provides evidence

　　concerning what triggers the first step in the

　　pollination process.

　　（C） An irresolvable discrepancy exists between what

　　the structure of most male cycad cones suggests

　　about cycad pollination and what the structure of

　　most female cones suggests about that process.

　　（D） The structure of male cycad cones rules out a

　　possible mechanism for cycad pollination that is

　　suggested by the structure of most female cycad

　　cones.

　　（E） The structure of male cycad cones is consistent

　　with a certain means of cycad pollination， but

　　that means is inconsistent with the structure of

　　most female cycad cones.

　　26. The evidence in favor of insect pollination of cycads

　　presented in lines 2-4 would be more convincing if

　　which of the following were also true？

　　（A） Only a small variety of cycad species can be

　　successfully transplanted.

　　（B） Cycads can sometimes be pollinated by means

　　other than wind or insects.

　　（C） Insects indigenous to regions to which cycads are

　　transplanted sometimes feed on cycads.

　　（D） Winds in the areas to which cycads are usually

　　transplanted are similar to winds in cycads'

　　native habitats.

　　（E） The transplantation of cycads from one region to

　　another usually involves the accidental removal

　　and introduction of insects as well.

　　27. The passage suggests that which of the following is

　　true of scientific investigations of cycad pollination？

　　（A） They have not yet produced any systematic evi-

　　dence of wind pollination in cycads.

　　（B） They have so far confirmed anecdotal reports con-

　　cerning the wind pollination of cycads.

　　（C） They have， until recently， produced little evidence

　　in favor of insect pollination in cycads.

　　（D） They have primarily been carried out using cycads

　　transplanted from their native habitats.

　　（E） They have usually concentrated on describing the

　　physical characteristics of the cycad reproductive

　　system.

　　28. PROCRASTINATION：

　　（A） diligence

　　（B） complacence

　　（C） reasonableness

　　（D） allegiance

　　（E） rehabilitation

　　29. CIRCUITY

　　（A） straightforwardness

　　（B） inventiveness

　　（C） authenticity

　　（D） insightfulness

　　（E） practicality