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PTE写作每日一练:Summarize Written Text题型训练

2017-08-04 14:55
摘要:  为了帮助大家能够更有效的提升PTE写作​成绩,100留学准备了PTE写作每日一练题目,帮助大家熟悉写作题型,希望能够帮助到您。

  为了帮助大家能够更有效的提升PTE写作成绩,100留学准备了PTE写作每日一练题目,帮助大家熟悉写作题型,希望能够帮助到您。

  题目要求:

  本题考试一般为2-3个摘要写作,每题为不超过300个单词的文本。在每道题中,考生要求用10分钟的时间总结为5-75个单词的一句话。

Growth rings, also referred to as tree rings or annual rings, can be seen in a horizontal cross section cut through the trunk of a tree. Growth rings are the result of new growth in the vascular cambium, a layer of cells near the bark that is classified as a lateral meristem; this growth in diameter is known as secondary growth. Visible rings result from the change in growth speed through the seasons of the year; thus, critical for the title method, one ring generally marks the passage of one year in the life of the tree.

The rings are more visible in temperate zones, where the seasons differ more markedly. The inner portion of a growth ring is formed early in the growing season, when growth is comparatively rapid (hence the wood is less dense) and is known as "early wood" (or "spring wood", or "late-spring wood"); the outer portion is the "late wood" (and has sometimes been termed "summer wood", often being produced in the summer, though sometimes in the autumn) and is denser.

  Many trees in temperate zones make one growth ring each year, with the newest adjacent to the bark. Hence, for these, for the entire period of a tree's life, a year-by-year record or ring pattern is formed that reflects the age of the tree and the climatic conditions in which the tree grew. Adequate moisture and a long growing season result in a wide ring, while a drought year may result in a very narrow one.

  参考答案:

Growth rings, which are the result of new growth in the vascular cambium and become visible when there are changes in growth speed through the seasons of a year, not only reflect the age of a tree, but also indicate the climatic conditions in which the tree grew as the width of a ring is directly proportional to the amount of water available.

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