单项选择 适中0.65 引用4 组卷468
People often wonder why historians go to so much trouble ________ millions of books, documents and records of the past.
| A．preserving | B．to be preserved | C．to preserve | D．preserved |
21-22高一上·广东深圳·阶段练习
类题推荐
Despite the failure to save every endangered species, we may __________ the majority from extinction.
| A．reserve | B．preserve | C．deserve | D．observe |
––Do you mind if I smoke here?
––I suggest you go to the separate room specifically ________ for smokers.
––I suggest you go to the separate room specifically ________ for smokers.
| A．conserved | B．reserved | C．preserved | D．deserved |
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