2. 计算机
  3. Currently　the　Pentium　chip　or(71),　made　by(72),　is　the　most　common　CPU　though　there　are　many　other　companies　that　produce　proces

Currently　the　Pentium　chip　or(71),　made　by(72),　is　the　most　common　CPU　though　there　are　many　other　companies　that　produce　proces

admin2009-02-15  74
问题 Currently　the　Pentium　chip　or(71),　made　by(72),　is　the　most　common　CPU　though　there　are　many　other　companies　that　produce　processors　for　personal　computers.　One　example　is　the　CPU　made　by　Motorola　which　is　used　in　Apple　computers.　With　faster　processors　the　clock　speed　becomes　more　important.　Compared　to　some　of　the　first　computers　which　operated　at　below　30　megahertz((73))the　Pentium　chips　began　at　75　megahertz　in　the　late　1990g.　As　of　mid　2003　speeds　now　exceed　3000　+　megahertz　or　3　gigahertz(check　your　local　computer　store　for　the　latest　speed).　It　depends　on　the(74)that　the　chip　is　housed　in,　or　the(75),　as　to　whether　you　are　able　to　upgrade　to　a　faster　chip.　The　motherboard　contains　the　circuitry　and　connections　that　allow　the　various　component　to　communicate　with　each　other.
选项 A、cycle　board
B、circulate　board
C、circuit　board
D、circle　board
答案C
解析 circuit　board：电路板
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