He's sitting 　　 the pool and 　　 orange juice.A. on; drinking B. by; drinking C. by; drinks D. at;...

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to of with at

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Pool法<虹吸法<快速融化离心法 Pool法<虹吸法≤快速融化离心法 Pool法<快速融化高心法≤虹吸法虹吸法快速融化离心法<虹吸法

twice a big swimming pool as twice as big a swimming pool as a swimming pool twice big as twice as a swimming pool big as

遥感系统RS 全球定位系统GPS 地理信息系统GIS 运用生境评价系统HES

Pool法＜虹吸法＜快速融化离心法 Pool法＜虹吸法≤快速融化离心法 Pool法＜快速融化离心法≤虹吸法虹吸法＜Pool法＜快速融化离心法快速融化离心法＜虹吸法＜Pool法

单话音站个人地球站天线系统混合地球站

SHE HSE ESH HES

Pool法<虹吸法<快速融化离心法 Pool法<虹吸法≤快速融化离心法 Pool法<快速融化离心法≤虹吸法虹吸法快速融化离心法<虹吸法

of into with to

HES HSE SEH ESH

电话地球站个人地球站天线系统混合地球站