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问题 单项选择题

使物质着色的物质，称为物质的着色剂。着色剂的作用，是使物质对光线产生选择性吸收，显出一定的颜色.但（）不使用着色剂。

A、玻璃

B、耐火材料

C、水泥

D、陶瓷

答案

参考答案：B

单项选择题

What has the Academy asserted to defend itself against such criticism().

A.It has taken into consideration the opinions and suggestions from various parts of the world.

B.Its physical distance from the world’s literary capitals serves to protect itself from outside influence.

C.No politics, whether international or regional, has ever interfered with its process of selection.

D.Its only standard of selection is true writing ability.
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单项选择题

退休是储蓄的最重要的动机之一，这常被称为（）

A.生命周期储蓄

B.消费储蓄

C.交易储蓄

D.税后储蓄
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