The natural forms of energy are the sun, the wind, the sea ______ heat from the center of the earth.

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问题 The natural forms of energy are the sun, the wind, the sea ______ heat from the center of the earth.

选项 A、as well as
B、as well
C、so well as
D、so well

答案A

解析 能量的自然形式是太阳、风、海洋,还有来自于地球中心的热量。as well as表示"也,还,而且",连接成分相同的两个词。
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