2. 外语
  3. In space,______and equipment need many forms of protection.

In space,______and equipment need many forms of protection.

admin2015-12-09  40
问题 In space,______and equipment need many forms of protection.
选项 A、pilots
B、astronauts
C、engineers
D、scientists
答案B
解析 这是一道词汇题。考点是名词意思的辨析。
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