5.??下列哪一个时钟源不属于LPC1768：（ ） A. 内部RC振荡器 B. 主振荡器 C. RTC振荡器 D. 看门狗时钟 ...

21.??I saw Mr. Turner _____ my way _____ school this morning. A. at; to B. on; to C. at; for D. on; for ...

19.??The middle aged man was seen ____out of the house on the afternoon of the murder. A. came B. come C. to come D. have come ...

9.??You _______ the news: he knew it already. A. needn't tell him B. needn't have told him C. didn't need to tell him D. need not to tell him ...

20.??The foreign friends think that Chinese people are very ______ . A. friends B. friend C. friendful D. friendly ...

10.??I don’t feel like ____ today. A. singing B. sing C. singed D. sing ...

16.??John ______ go to the post office this morning, but he didn't. A. was supposed to B. is supposed to C. supposed to D. supposed ...

9.??When the class was over, everyone made ___ the dining-room. A. at B. for C. to D. in ...

1.??"Can you repair the damage?" "Well, I_____ repair it, but I am not sure." A. will be able to B. may be able C. may be able to D. will be able ...

12.??Water usually freezes when temperature is _____ zero and ice changes into water again when the temperature is _____ zero. A. below; above B. under; over C. above; below D. below; over ...