1. He was unable to give a credible explanation for his behavior.
     A. workable B. convincing C. practical D. reliable (dependable可靠的)
    解釋：credible：convincing; believable 可信的; 可靠的:
    a credible witness, statement, report 可信的證人﹑ 陳詞﹑ 報道
    2. Smoking is banned in the building.
     A. listed B. forbidden C. handled D. investigated
    解釋：banned：officially forbid (sth) 明令禁止（某事物）:
    The play was banned (by the censor). 該劇本遭（審查員）查禁.
    3. I want a job with good prospects for promotion.
     A. advancement B. replacement C. retirement D. advertisement
    解釋：promotion：raising or being raised to a higher rank or position 提升; 晉級: gain/win promotion 獲得晉級
     If you are successful, you can expect promotion. 你只要做出成績, 就能指望獲得提升
     Advancement (n.) promotion in rank or status 級別或地位的晉升; 升級: The job offers good opportunities for advancement. 這份工作有很好的晉升機會.
    4. The report was compiled from a survey of 5000 households.
     A. printed B. attached C. written D. sent
    解釋：compiled：collect (information) and arrange it in a book, list, report, etc 收集（資料）并編輯（成書﹑ 表﹑ 報告等）:
    5. The patient showed a marked improvement （明顯的改善；明顯的好轉(zhuǎn)）in her condition after changing medication.
     A. great B. clear C. quick D. regular
    解釋：marked：Having one or more distinguishing marks; clear;
    Clearly defined and evident; noticeable（明顯的；清楚的）;