Our planet is about ______ years old.A．35,000B．4600C．4600 millionD．500 million
题型：不详难度：来源：
Our planet is about ______ years old.| A．35,000 | B．4600 | C．4600 million | D．500 million |
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答案
| C |
解析
| 考查常识。句意“我们的星球（地球）有大约46亿年大了。”故选C。 |
举一反三
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