判断题

To protect our environment, we are strongly suggested to not only conserve the energy and resources but also reduce the emissions of greenhouse gas.

答案：正确

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单项选择题

Decide whether the following statements are True or False. Athletics is a sport based on the skills of running, jumping, throwing and walking. （）

A．对
B．错

骨密质位于骨的内部。

答案：错误