单项选择题

以下哪种乐器既可以作为效果乐器，也可以作为节奏乐器（）。

A．雷声鼓
B．沙筒
C．雨棍
D．音树

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单项选择题

下列哪个不属于多糖（）

A．树胶
B．粘液质
C．蛋白质
D．纤维素
E．果胶

In this section, you will hear three passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D).A、America’s economic condition.
B、A comparison between America’s job market and Europe’s.
C、Eurozone’s unemployment rate.
D、America’s unemployment rate.

答案： B