试题与答案

自然界地表层原生铜的硫化物经氧化、淋滤作用后变成CuSO4溶液,向地下深层渗透,

题型:选择题

题目:

自然界地表层原生铜的硫化物经氧化、淋滤作用后变成CuSO4溶液,向地下深层渗透,遇到难溶的ZnS或PbS,慢慢转变为铜蓝(CuS)。下列分析正确的是  [ ]

A. CuS的溶解度大于PbS的溶解度

B. 原生铜的硫化物具有还原性,而铜蓝没有还原性

C. CuSO4与ZnS反应的离子方程式是Cu2++S2-==CuS↓

D. 整个过程涉及的反应类型有氧化还原反应和复分解反应

答案:

答案:D

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题型:单项选择题

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The (3) for this happy set of circumstances is simple. For thousands of years, travel here (4) easier by boat than by lanD.So when mass tourism arrived in the (5) 1980s, there was no coast road for ribbon development to follow. So the peninsula, just (6) hour from Bodrum airport, has not become one long littoral of resort.
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It’s worth thinking carefully about location when planning a family (10) on the peninsulA.Choose a place that is centrally located, preferably out of earshot (11) Bodrum town’s "lively"—which means nosy—nightlife, and you can then use (12) area’s comfortably small scale to your advantage. Today’s new roads mean most places can (13) reached in under an hour by taxi or the ubiquitous dolmus-minibus.
The (14) of facilities at the Tamarisk Beach Hotel near the small village of Ortakent makes (15) a good base. The family-run hotel—rooms and suites are in two-storey buildings (16) by palm trees and flowers in terracotta pots—sits above its own sandy (17) beach, shaded by tamarisk trees and sheltered by nearby islands.
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"The body and the mind are inextricably interwoven" means______.

A.they interact with each other

B.they are confused by all of us

C.they have little effect on each other

D.they are mixed up in all of us

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