1、A is B 、A,B….和 A，which is….
a. A computer is a fast and accurate system that…(A is B)
b.Wondows CE ,a portable version of Wondows 95 for PDAs , sells very well .(A,B)
c. The computer , which is a computing device , has greatly suppored science (A,which is)
a. A computer is a fast and accurate system that…(A is B)
b.Wondows CE ,a portable version of Wondows 95 for PDAs , sells very well .(A,B)
c. The computer , which is a computing device , has greatly suppored science (A,which is)
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