问题详情
After the bacteria remove the salts, experts clean and dry the surface of the paintings to（ ）them for years to come.
A.keep B.conserve C.reserve D.preserve
未找到的试题在搜索页框底部可快速提交，在会员中心"提交的题"查看可解决状态。
收藏该题
查看答案
相关问题推荐
-
Tourists flock from the remotest places to see the capital’s sights
A.invade B.troop C.prompt D.gather -
.Education is like a ladder. At the bottom of the ladder we have only（ ）, and at the top we have knowledge.
A.ignorance B.illiteracy C.vacancy D.potential -
Ever since the family moved to the suburbs last year, they（ ）better health.
A.could have enjoyed B.had enjoyed C.have been enjoying D.are enjoying -
I（ ）to him because he phoned me shortly afterwards.
A.ought to have written B.must have written C.couldn’t have written D.needn’t have written -
In 1983 the National Science Foundation (NSF),（ ） mission is to promote science, took over the network.
A.their B.that C.when D.whose