单选题：“…a world that is still full of mysteries”refers to________

题目内容：

“…a world that is still full of mysteries”refers to________ A．The eart
B．Out spac
C．The ocea
D．Mar

参考答案：

答案解析：

According to the context，what does the word“positives”in the

According to the context，what does the word“positives”in the fifth paragraph mea

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You startled(A级)me when you shouted． A．threatened B．amazed C．interrupted D．troub

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By analyzing the results of tae kwon do at the summer games，the anthropologists

分类：理工类题型：单选题