13.For a number of years the selection of music for each film program rested entirely in the hands
of the conductor or leader of the orchestra，and very often the principal qualification far holding
such a position was not skill or taste so much as the ownership of a large personal library of
musical pieces.
(特殊结构 not…SO much as…——与其说…不如说…)
在好些年内，为各部影片选择配乐的权力完全掌握在乐队指挥或队长手中，而通常担任这种
职位的资格与其说是技巧或鉴赏品位，不如说是个人拥有音乐作品的丰富收藏。
分句 1：.For a number of years the selection of music for each film program rested entirely in the
hands of the conductor or leader of the orchestra
分句 2：and very often the principal qualification far holding such a position was not skill or taste
so much as the ownership of a large personal library of musical pieces
分句 1 和分句 2 构成并列关系，分句 2 的难点在于 not…… so much as 的结构。
14·Coincident with concerns about the accelerating loss of species and habitats has been a
growing appreciation of the importance of biological diversity，the number of species in a
particular ecosystem，to the health of the Earth and human well-being.
(倒装 coincident with concerns…has been…=…has been coincident with concerns…)
在对物种和动物栖息地加速消失表示关注的同时，人们也越来越认识到生物多样化，即一个
特定生态系统中物种的数量对地球的健康以及人类幸福的重要性。
分句 1：Coincident with concerns about the accelerating loss of species and habitats has been a
growing appreciation of the importance of biological diversity
分句 2：the number of species in a particular ecosystem
分句 3：to the health of the Earth and human well-being
分句 1 内部构成倒装，正常语序应该是 concerns about the accelerating loss of species and
habitats has been coincident with a growing appreciation of the importance of biological diversity
to the health of the Earth and human well-being
所以真正的主句经过精简之后是 concerns has been coincident with a growing appreciation
分句 2 是一个插入语，用来解释说明分句 1 结尾的 biological diversity
15.The fact that half of the known species are thought to inhabit the world's rain forests does not
seem surprising，considering the huge numbers of insects that comprise the bulk of the species.
(同位语从句 fact that…;定语从句 that comprise the bulk…)
考虑到组成大部分物种的昆虫的巨大数量，认为半数的已知物种栖息在世界的雨林中这一事
实看起来并不令人吃惊。
分句 1：The fact does not seem surprising
分句 2：that half of the known species are thought to inhabit the world's rain forests
分句 3：considering the huge numbers of insects
分句 4：that comprise the bulk of the species
分句 1 嵌套分句 2，分句 2 解释说明分句 1 的主语 the fact,是同位语从句，分句 3 作为分句 1
的原因状语，分句 4 是定语从句，修饰分句 3 的 the huge numbers of insects