2. 外语
  3. The evolution of the technology of microelectronics over the past decade has been so rapid that it is sometimes called a revolut

The evolution of the technology of microelectronics over the past decade has been so rapid that it is sometimes called a revolut

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问题 The evolution of the technology of microelectronics over the past decade has been so rapid that it is sometimes called a revolution.
选项 A、has been so rapid that it is sometimes
B、has been rapid enough sometimes to be
C、has been rapid enough it is sometimes
D、is so rapid it has sometimes been
E、is so rapid that it is sometimes
答案A
解析 本题属于简单的系表结构，但所有选项都无“so…as to”结构，因此选“so…that”的选项。由over the past decade提示了应用现在完成时，因此选A；不倾向于用B中enough…to结构。
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