[求助]请教--------9805年阅读36题

Questions 31-40

       Growing tightly packed together and collectively weaving a dense canopy of branches, a stand of red alder trees can totally dominate a site to the exclusion of almost everything else. Certain species such as salmonberry and sword ferns have Line adapted to the limited sunlight dappling through the canopy, but few evergreen trees (S) will survive there; still fewer can compete with the early prodigious growth of alders. A Douglas fir tree reaches its maximum rate of growth ten years later than an alder, and if the two of them begin life at the same time, the alder quickly outgrows and dominates the Douglas fir. After an alder canopy has closed, the Douglas fir suffers a marked decrease in growth, often dying within seven years. Even more shade-tolerant species of trees such as hemlock may remain badly suppressed beneath aggressive young alders.

       Companies engaged in intensive timber cropping naturally take a dim view of alders suppressing more valuable evergreen trees. But times are changing; a new generation of foresters seems better prepared to Include in their management plans consideration     of the vital ecological role alders, play.

      Among the alder's valuable ecological contributions is its capacity to fix nitrogen in nitrogen-deficient soils. Alder roots contain clusters of nitrogen-fixing nodules like those found on legumes such as beans. in addition, newly developing soils exposed by recent glacier retreat and planted with alders show that these trees are applying the equivalent of ten bags of high-nitrogen fertilizer to each hectare per year. Other chemical changes to soil in which they are growing Include a lowering of the base content and rise In soil acidity, as well as a substantial addition of carbon and calcium. to the soil,

36.    It can be inferred from paragraph 2 that previous generations of foresters

(A) did not study the effects of alders on forests

(B) did not want alders In forests

答案选择的事A，但是我觉得文章并没有说previous generations没有学习关于alder的环境作用，只是说他们不看好这种树因为他们阻碍了evergreen tree的生长。A是文章中没有提到的。

而根据文章Companies engaged in intensive timber cropping naturally  take a dim view of alders suppressing more valuable evergreen trees可以得知previous generations并不抱乐观态度是因为他们阻碍了more valuable的evergreen tree的生长，这才是根本原因。可以引申为他们不希望alders 在 forests里，所以我选择的答案是B

个人觉得文章中主要两处提示答案，1，naturally，跟这里的before大致对应，2，take a dim view of 大概就是指not study much。

所以还是觉得A比较合适一些。。

+谢谢斑竹的回答，再问一句

take a dim view of ..不是“对...不看好”的意思么......