Ifasubstanceisdissolvedinwaterorheated，itmay（）agas.
C
「句意」 如果一种物质溶解在水里或被加热，它可能释放出一种气体。
「难点」 give into 为非固定搭配; give over 意为“托付， 交托”;give off 意为 “散发”;give away 意为“送掉，分发(奖品)等”。
I_____thepartymuchmoreiftherehadn’tbeenquitesuchacrowdofpeoplethere.
Aleading___________intelligenceandoperationscompanyhasreleaseditsanalysisofworldwidereportedincidentsofpiracyandcrimeagainstmariners.
Hewasluredintoacrimehewouldnot____________havecommitted.
Thecountry’schiefexportsarecoal,carsandcottongoods,cars_____themostimportantofthese.
Toobtainasatisfactoryresult，onemustapplytwo____ofpaintonacleansurface.