考试网 >> 外语考试 >> PETS >> PETS试题 >> PETS考试二级模拟试题一（一）

发布时间：2006-06-23 16:35     点击：

　　Since 1960 a new kind of tool has appeared. This is the silicon chip( & ft )@a little chip of silicon crystal. It is   (47)    than a fingernail, but it can   (48))    more than a million "bits" of information. It is   (49)   electronic brain.

　　Every year these chips get cleverer, but   (50)   size gets smaller, and their cost gets   (51)   .

　　Human beings used   (52)   chips for more than two million years, but human   (53)   changed very little in that time. We have used silicon chips for   (54)   a few years, but life is changing faster every day.

　　(55)   will life be like in twenty years?

　　36. [A] after            [B] to             [C] against           [D] among

　　37. [A] sharp           [B] hot             [C] strange           [D] weak

　　38. [A] hitting           [B] cutting          [C] hit               [D] cut

　　39. [A] not             [B] only            [C] just             [D] also

　　42. [A] easy            [B] easily          [C] difficult          [D] hard

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