第一部分：阅读理解（第一节15小题，第二节5小题；每小题2分，满分40分）
第一节：阅读下列材料，从每题所给的四个选项（A、B、C和D）中，选出最佳选项， 并在答题卡上将该选项标号涂黑。
A
Deserts are found where there is little rainfall or where rain for a whole year falls in only a
few weeks' time. Ten inches of rain may be enough for many plants to survive if the rain is spread throughout the year, If it falls, within one or two months and the rest of the year is dry, those plants may die and a desert may form.
