2.??将LPC1768微控制器的P0.2和P0.3分别设置为TXD0和RXD0，而不改变其他引脚的设置，则程序代码应该为：（ ） A. PINSEL0 = (PINSEL0&0xFFFFFF0F) | 0x00000050 B. PINSEL0 = PINSEL0 | 0xFFFFFF5F C. PINSEL1 = (PINSEL1&0xFFFFFF0F) | 0x...

5.??"I was wondering if you ______ give me a stamp?" "I think I've got some. Here you are." A. may B. might C. will D. could ...

11.??"Got your plans for the weekend, Bill?" "Well, I had planned to go to London, but I _____ afford the train fare." A. can B. can't C. may D. might ...

22.??He has ______(join) the army for ten years and is now an officer. A. gone into B. joined in C. been in D. come into ...

15.??He came to see me _____ two o’clock. A. around B. for C. on D. of ...

19.??"Can I wear my hair long like the other boys?" "I'd rather_____ ." A. you didn't B. you can't C. you won’t D. you wouldn't ...

13.??It was not until then that I came to know knowledge ____only from practice. A. had come B. came C. would come D. comes ...

5.??7. The old woman next door is very keen _____________ growing roses. A. at B. on C. with D. to ...

16.??I do not intend to follow that, because we shall have an opportunity to do so on another ______. A. occasion B. situation C. condition D. environment ...

7.??"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 ...