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GRE阅读题目解析:生物材料

2017-03-27 08:52:00来源：新东方在线整理

　　P1

　　1

　　Currently, the paramount problem in the field of biomaterials, the science of replacing diseased tissue with human-made implants, is control over the interface, or surface, between implanted biomaterials and living tissues.

　　生物材料领域，也就是研究用人造植入物取代病变组织的科学，当下遇到的最大问题，是(无法)控制植入材料和活体组织的结合部或表面。

　　2

　　The physical properties of most tissues can be matched by careful selection of raw materials: metals, ceramics, or several varieties of polymer materials.

　　多数组织的物理特性可以通过仔细选择原料来匹配，比如金属，陶瓷，或多种聚合材料。

　　(polymer 聚合物，聚合体)

　　3

　　Even the requirement that biomaterials processed from these materials be nontoxic to host tissue can be met by techniques derived from studying the reactions of tissue cultures to biomaterials or from short-term implants.

　　甚至由这些材料加工出的植入物，对被植入组织无毒的要求，都可以通过对组织培养反应的研究，或短期植入来达成。

　　4

　　But achieving necessary matches in physical properties across interfaces between living and non-living matter requires knowledge of which molecules control the bonding of cells to each other — an area that we have not yet explored thoroughly.

　　但想要达到活体组织与植入物的结合部，在物理特性上必然匹配，需要掌握控制细胞间连结分子的知识，这是目前我们尚未完全探索的领域。

　　5

　　Although recent research has allowed us to stabilize the tissue-biomaterial interface by controlling either the chemical reactions or the microstructure of the biomaterials, our fundamental understanding of how implant devices adhere to tissues remains woefully incomplete. (159 words)

　　尽管最近的研究已经允许我们，通过控制化学反应或植入物的微观结构，使组织与植入物的结合部趋于稳定，可惜我们还是未能完全解释植入物如何才能与活体结合。

　　1. According to the passage, the major problem currently facing scientists in the field of biomaterials is

　　(A) assessing and regulating the bonding between host tissue and implants

　　(B) controlling the transfer of potentially toxic materials across the interface of tissue and implant

　　(C) discovering new materials from which to construct implant devices

　　(D) deciding in what situations implants are needed

　　(E) determining the importance of short-term implants to long-term stability of tissue implant interfaces

　　选 A

　　A (问题是无法)确定和调节活体组织和植入物之间的连接。

　　句 1 ：

　　Currently, the paramount problem in the field of biomaterials, the science of replacing diseased tissue with human-made implants, is control over the interface, or surface, between implanted biomaterials and living tissues.

　　句 4：

　　But achieving necessary matches in physical properties across interfaces between living and non-living matter requires knowledge of which molecules control the bonding of cells to each other — an area that we have not yet explored thoroughly.

　　句 5：

　　Although recent research has allowed us to stabilize the tissue-biomaterial interface by controlling either the chemical reactions or the microstructure of the biomaterials, our fundamental understanding of how implant devices adhere to tissues remains woefully incomplete.

　　2. The passage suggests which of the following about the recent research mentioned in the last sentence ?

　　(A) It has solved one set of problems but has created another.

　　(B) It has concentrated on secondary concerns but has ignored primary concerns.

　　(C) It has improved practical applications of biomaterial technology without providing a complete theoretical explanation of that improvement.

　　(D) It has thoroughly investigated properties of biomaterials but has paid little attention to relevant characteristics of human tissue.

　　(E) It has provided considerable information on short-term implant technology but little on long-term implant technology.

　　选 C

　　句 5：

　　Although recent research has allowed us to stabilize the tissue-biomaterial interface by controlling either the chemical reactions or the microstructure of the biomaterials, our fundamental understanding of how implant devices adhere to tissues remains woefully incomplete.

　　以上就是新东方在线GER频道为你带来的GRE阅读题目解析:生物材料，更多精彩敬请关注新东方在线GRE频道。

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