雅思阅读第137套P2:Tool for ancient writing

雅思阅读第175套P3：The Impact of Environment to Children

雅思阅读第129套P1:Biology of Bitterness

雅思阅读第039套P1-Morse Code

雅思阅读第033套P3-Mechanisms of Linguistic Change

雅思阅读第053套P1-The Concept of Childhood in Western Countries

雅思阅读第056套P2-How are deserts formed?

雅思阅读第040套P1-Thomas Young The Last True Know-It-All

雅思阅读第087套P1-ALTERNATIVE ENERGY SOURCES

雅思阅读第040套P3-Source of Knowledge