The fastest of these machines can perform more than 7 trillion-and theoretically can run more than 12 trillion-operations per second and can store 6 trillion characters in its memory, ( ) it to do the work of thousands of PCs.
①that allows ②allows ③to allow ④ allowing
为什么这题选4呀,,我感觉1,3都可以呀
①that allows ②allows ③to allow ④ allowing
为什么这题选4呀,,我感觉1,3都可以呀