2. 外语
  3. Silicon chips are reliable and cheap (to produce) in large numbers and are (used them) in computers, calculators, (programmed) h

Silicon chips are reliable and cheap (to produce) in large numbers and are (used them) in computers, calculators, (programmed) h

admin2005-01-30  181
问题 Silicon chips are reliable and cheap (to produce) in large numbers and are (used them) in computers, calculators, (programmed) household appliances, and most (electronic applications).
选项 A、to produce
B、used them
C、programmed
D、electronic applications
答案B
解析
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