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Politeness can also bring dangers to people if not properly conducted.

A. TRUE
B. FALSE

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使用或储存特殊贵重机器仪表、仪器等设备或物品的建筑，其耐火等级为()。

A. 一级
B. 二级
C. j级

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Most acts of politeness can be responded with a friendly nod or a wave of acknowledgement

A. TRUE
B. FALSE

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Nowadays it is not uncommon to find the well-mannered motorist on the road, even though there is an exception.

A. TRUE
B. FALSE

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Which of the following is true of Para. 3？

A. Clean energy fever is fuelled mainly by human psychological weakness.
B. The energy provision for the coming decades will undergo rapid changes.
C. Hydrogen as a new energy will replace traditional energy forms like coal,and gas.
D. Supporters of clean energy business are pretty optimistic about its future.

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Politeness can also bring dangers to people if not properly conducted.

A. TRUE B. FALSE

使用或储存特殊贵重机器仪表、仪器等设备或物品的建筑，其耐火等级为()。

Most acts of politeness can be responded with a friendly nod or a wave of acknowledgement

Nowadays it is not uncommon to find the well-mannered motorist on the road, even though there is an exception.

Which of the following is true of Para. 3？

A. TRUE
B. FALSE