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（22分）阅读图文材料，回答问题。 材料一 图甲为非洲局部区域图，图乙为图甲中①、②两地的降水量统计图，图丙为坦桑尼亚主要矿产资源分布图。
材料二 过去，矿产只是坦桑尼亚的次要出口货物。近年来，中国投资帮助坦桑尼亚建设基础设施，使达累斯萨拉姆港的吞吐量和陆路交通得到极大改善，同时坦桑尼亚与中国和西方发达国家加强合作使矿业产值每年以20%以上速度发展，成为国民经济和出口的支柱产业。 （1）比较R 1、R 2两河入海口河段水文特征的主要差异。（8分） （2）简述①地与②地的降水的最主要差异并分析原因。（8分） （3）简析矿业成为坦桑尼亚国民经济和出口的支柱产业的原因。（6分）
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who
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A.
they can afford the cure for malaria
B.
they can save their cash efficiently
C.
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D.
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【单选题】Obtaining Drinking Water from Air Humidity Not a plant to be seen，the desert ground is too dry．But the air contains water，and research scientists have found a (51) of obtaining drinking water from a...
A.
who
B.
where
C.
when
D.
which
【单选题】Section BDirections: There are 2 passages in this section．Each passage is followed by some questions or unfinished statements．For each of them there are four choices marked A, B, C and D．You should de...
A.
they can afford the cure for malaria
B.
they can save their cash efficiently
C.
they can live safely in the village
D.
their can get rid of poverty soon
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