2. 外语
  3. A team of engineers has been developing a space cleanup satellite to eliminate man-made orbital debris, ________broken-down sate

A team of engineers has been developing a space cleanup satellite to eliminate man-made orbital debris, ________broken-down sate

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问题 A team of engineers has been developing a space cleanup satellite to eliminate man-made orbital debris, ________broken-down satellites or tossed-away rocket stages.
选项 A、be it
B、if it is
C、whether it is
D、no matter
答案A
解析 省略倒装题。本题逗号后是一个省略了句子成分的让步状语从句，补充完整后应为…whether it might be broken-down satellites or tossed—away rocket stages。让步状语有条件的意味，通常使用虚拟语气。如果省略引导词whether，则从句应用倒装结构，其中might可以省略，故A为答案。if引导让步状语从句时不能与or连用，排除B；将whether it is填入空格从字面意思上来看没有大问题，但这样的表达更口语化，不是特别规范，排除C；no matter引导状语从句时，通常与what、who、when、where、which、how等疑问词连用，而且需要搭配主语、谓语或表语，单独的no matter无法使句子完整，排除D。
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