(单选题)18: "I had to walk home yesterday: I had no money for my fare.""You______ me l I could have lent you the money!" A: ought to tell B: must have told C: must tell D: should have told ...

(单选题)12: This coastal area ________ a national wildlife reserve last year. A: was named B: named C: is named D: Names ...

(单选题)8: "Paul may have gone to the playground to watch a football match." "No, if there'd been a match today, he_____ ." A: could've told me B: might've told me C: would've told me D: must've told me ...

(单选题)18: "I had to walk home yesterday: I had no money for my fare.""You______ me l I could have lent you the money!" A: ought to tell B: must have told C: must tell D: should have told ...

(单选题)12: This coastal area ________ a national wildlife reserve last year. A: was named B: named C: is named D: Names ...

(单选题)6: No sooner had we sat down ______we found it was time to go. A: than B: when C: as D: while ...

(单选题)2: 89C51串行口工作方式2,发送方设置的TB8传送到接收方被放置在（ ）中。 A: TI B: RI C: RB8 D: TB8 ...

(单选题)16: LED动态显示方式中,将所有的段选线（ ）。 A: 串联在一起 B: 并联在一起 C: 分别连接 D: 都不接 ...

(单选题)10: 原码01011001所对应的补码是（ ）。 A: 10100111 B: 10100110 C: 00100111 D: 01011001 ...

(单选题)4: 89C51的工作寄存器中可作为间址寄存器使用的是（ ）。 A: R7 B: R6 C: R5 D: R1 ...