单项选择题


Scientists once estimated that Earth’s crust started shifting three billion years ago.

A．Right
B．Wrong
C．Not mentioned
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单项选择题
Supertasters prefer high-salt cheese because
A．it is good to health.
B．it is rich in nutrition.
C．it has intense bitter tastes.
D．it tastes less bitter.
单项选择题
E
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