第5题: [单项选择]16位PC微机中整数的有效范围是( )。 A. -32768~+32767 B. -32767~+32767 C. 0—65535 D. -32768~+32767或0~65535 参考答案:D 答案解析: [解析] 216=65536,而整数分为有符号和无符号两种,故答案为选项D)。
第13题: [单项选择]What may happen if we cannot hear ourselves think A. We may forget what we have thought about. B. Our thoughts may be disturbed. C. Our mind may be harmed. D. We may have difficulty finding the right words. 参考答案:C 答案解析:本题为细节题。第三段最后一句即为答案。