单选题_You need to believe that space tourism will grow and get cheaper. Maybe there is another option.—.选项：

正确 答案：微信搜索【 国开 搜题】公众号

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单选题_You need to believe that space tourism will grow and get cheaper. Maybe there is another option.—.选项：

A.How is it?

B.What is it?

C.Where is it?

参考答案：B

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