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问题 选择题

下列有关实验现象的描述，错误的是[ ]

A ．SO2气体通入高锰酸钾溶液后，溶液颜色会褪去

B ．氨气遇氯化氢气体产生白色烟雾

C ．将Cu(OH)2和葡萄糖在碱性溶液中加热至沸腾出现红色色沉淀

D ．蛋白质遇浓硝酸变黄色

答案

答案：B

选择题

As well as costing the Middle East dearly in terms of human life, conflict! (冲突) _______ the region around $ 12 trillion since 1991, according to a report by the Strategic Foresight Group.

A．is also cost

B．had also cost

C．will also cost

D．has also cost
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单项选择题

下面不能作为旅行社的注册资本的是（）

A.自有资金

B.合股集资

C.发行股票和债券

D.银行贷款
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