雅思阅读第137套P2:Tool for ancient writing

雅思阅读第087套P1-ALTERNATIVE ENERGY SOURCES

雅思阅读第047套P3-Improving Patient Safety

雅思阅读第154套P1：Ambergris

雅思阅读第120套P1-Reducing electricity consumption on the Isle of Eigg

雅思阅读第040套P3-Source of Knowledge

雅思阅读第028套P2-The Ant and the Mandarin

雅思阅读第143套P1:Radio Automation

雅思阅读第122套P3-Recovering a damaged reputation

雅思阅读第057套P3-Elephant Communication