[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fi3qsbVyJPd_4mI_LIM0V6Arpav2-AtS2E9iWKKAGDJY":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":28,"type":29},[],"2023-10-27 22:38:38",102013784,[8,9,10,11],"same","similar","opposite","parallel",{"courseId":13,"courseImg":14,"courseName":15},"1a045e101743bfb667d3381ca682b64f","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","专业英语","Pairs of shared electrons must spin in ( ) directions",[18,30,39,48,57,66,69,78,87,96],{"answer":19,"createTime":20,"id":21,"options":22,"question":27,"source":28,"type":29},[],"2023-10-27 22:38:37",102013779,[23,24,25,26],"has","have","is","are","The problem whether natural rubber ( ) a polymer with linear chain molecules has been solved","v1",0,{"answer":31,"createTime":20,"id":32,"options":33,"question":38,"source":28,"type":29},[],102013780,[34,35,36,37],"compound","molecule","catalyst","functional group","A ( ) is a substance that speeds up a chemical reaction but does not enter into the reaction itself",{"answer":40,"createTime":20,"id":41,"options":42,"question":47,"source":28,"type":29},[],102013781,[43,44,45,46],"halogen","halogenate","halide","halogenation","Alkanes undergo reactions such as cracking, alkylation, oxidation, ( ), nitration and so on",{"answer":49,"createTime":20,"id":50,"options":51,"question":56,"source":28,"type":29},[],102013782,[52,53,54,55],"conduct","conducting","transport","transporting","Organic compounds will not usually ( ) an electric current when in solution",{"answer":58,"createTime":20,"id":59,"options":60,"question":65,"source":28,"type":29},[],102013783,[61,62,63,64],"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":67,"createTime":5,"id":6,"options":68,"question":16,"source":28,"type":29},[],[8,9,10,11],{"answer":70,"createTime":5,"id":71,"options":72,"question":77,"source":28,"type":29},[],102013785,[73,74,75,76],"oxide","oxidation","sulfide","sulfate","Tertiary alcohols are resistant to ( )",{"answer":79,"createTime":5,"id":80,"options":81,"question":86,"source":28,"type":29},[],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":5,"id":89,"options":90,"question":95,"source":28,"type":29},[],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":5,"id":98,"options":99,"question":104,"source":28,"type":29},[],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)"]