[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fRntwuC6xxbKjsQyOASnL6BsDUQzSsWmODFRypKZPHcs":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2023-10-27 22:38:37",102013781,[8,9,10,11],"halogen","halogenate","halide","halogenation",{"courseId":13,"courseImg":14,"courseName":15},"1a045e101743bfb667d3381ca682b64f","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","专业英语","Alkanes undergo reactions such as cracking, alkylation, oxidation, ( ), nitration and so on",[18,29,38,41,50,59,69,78,87,96],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],102013779,[22,23,24,25],"has","have","is","are","The problem whether natural rubber ( ) a polymer with linear chain molecules has been solved","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],102013780,[33,34,35,36],"compound","molecule","catalyst","functional group","A ( ) is a substance that speeds up a chemical reaction but does not enter into the reaction itself",{"answer":39,"createTime":5,"id":6,"options":40,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":27,"type":28},[],102013782,[45,46,47,48],"conduct","conducting","transport","transporting","Organic compounds will not usually ( ) an electric current when in solution",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":27,"type":28},[],102013783,[54,55,56,57],"discovery","invention","estimation","synthesis","It has long been the practice to attempt the ( ) of natural products in the laboratory once their structures had been determined",{"answer":60,"createTime":61,"id":62,"options":63,"question":68,"source":27,"type":28},[],"2023-10-27 22:38:38",102013784,[64,65,66,67],"same","similar","opposite","parallel","Pairs of shared electrons must spin in ( ) directions",{"answer":70,"createTime":61,"id":71,"options":72,"question":77,"source":27,"type":28},[],102013785,[73,74,75,76],"oxide","oxidation","sulfide","sulfate","Tertiary alcohols are resistant to ( )",{"answer":79,"createTime":61,"id":80,"options":81,"question":86,"source":27,"type":28},[],102013786,[82,83,84,85],"non-volatile","volatile","biodegradable","flammable","In contrast to inorganic compounds, the molecular attraction of organic compounds is weak, so organic compounds are usually ( ) and possess low melting points",{"answer":88,"createTime":61,"id":89,"options":90,"question":95,"source":27,"type":28},[],102013787,[91,92,93,94],"practice","experiment","experience","phenomenon","In their work they pay much attention to the combination of theory with ( )",{"answer":97,"createTime":61,"id":98,"options":99,"question":104,"source":27,"type":28},[],102013788,[100,101,102,103],"single","double","Triple","covalent","The two pairs of electrons of oxygen may be shared with one carbon alone forming a ( ) bond(>C=O)"]