A．had talked toB．had seenC．had been withD．had visited
A. had talked to
B. had seen
C. had been with
D. had visited
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【B10】
A. last
B. is
C. lasts
A．Find a high-paying part-time job.B．Practicse his knowledge in field work.C．Borrow som
A. Find a high-paying part-time job.
B. Practicse his knowledge in field work.
C. Borrow some money from financial aid.
D. Prepare for his last academic year in advance.
某计算机指令字长为16位，指令有双操作数、单操作数和无操作数3种格式，每个操作数字段均有6位二进制表示，该指令系统共有m条(m＜16)双操作数指令，并存在无操作数指令。若采用扩展操作码技术，那么最多还可设计出单操作数指令的条数是()。
A. 22
B. (24-m)×26-1
C. (24一m)×26
D. (24一m)×(26-1)
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