23. The air quality in the city, is shown in the report, has improved over the past two months.
(A) that
(B) it
(C) as
(D) what

34)”教师表”中又“职工号”、“姓名”、“工龄”和“系号”等字段，“学院表”中又“系名”和“系号”等字段，计算机 系教师总数的命令是 (A)SELECT COUNT(*)FROM 教师表 INNER JOIN 学院表 ON 教师表系号=学院表系号 WHERE 系名=“计算机” (B)SELECT COUNT(*)FROM 教师表 INNER JOIN 学院表 ON 教师表系号=学院表系号 ORDER BY 教师表系号； HAVING 学院表，系名=“计算机” (C)SELECT COUNT(*)FROM 教师表 INNER JOIN 学院表 ON 教师表系号=学院表系号 GROUP BY 教师表系号； HAVING 学院表系名=“计算机” (D)SELECT COUNT(*)FROM 教师表 INNER JOIN 学院表 ON 教师表系号=学院表系号 WHERE 系名=“计算机” HAVING 学院表，系名=“计算机”

35）教师表 中有“职工号”、“姓名”、“工龄”和“系号”等字段 学院表中有 “系名”和“系号”等字段，求教师总数最多的系的教师人数，正确的命令序列是 (A) SELECT 教师表.系号，COUNT(*)AS 人数 FROM 教师表，学院表； GROUP BY 教师表.系号INTO DBF TEMP SELECT MAX(人数)FROM TEMP (B) BSELECT 教师表.系号，COUNT(*)AS 人数 FROM 教师表，学院表； WHERE 教师表.系号 = 学院表.系号 GROUP BY 教师表.系号 INTO DBFTEMP SELECT MAX(人数)FROM TEMP (C) CSELECT 教师表.系号，COUNT(*)AS 人数 FROM 教师表，学院表； WHERE 教师表.系号 = 学院表.系号 GROUP BY 教师表.系号 TO FILE TEMP SELECT MAX(人数)FROM TEMP (D)DSELECT 教师表.系号，COUNT(*)AS 人数 FROM 教师表，学院表； WHERE 教师表.系号 = 学院表.系号GROUP BY 教师表.系号 INTO DBFTEMP SELECT MAX(人数)FROM TEMP

21． What are you going to do this weekend? --- . If time permits, I may go to Shanghai with my friends. (A). Don’t mention it (B)． It doesn’t matter (C)． Forget it (D)． It depends

22.---Have you figured out how much the trip will cost? ---＄4，000. or like that. (A). anything (B) everything (C) something (D) nothing

24.---When did the computer crash? ---This morning, while I the reading materials downloaded over the past two months. (A). have sorted (B) was sorting (C) am sorting (D) had sorted

25.---Why do you choose to work in an international travel agency? ---Well, you know, English is my . So it is my best choice. (A). strength (B) talent (C) ability (D) skill

26.China has been pushing the reform of public hospitals all its citizens. (A) in charge of (B) for the purpose of (C) in honor of (D) for the benefit of

27.Anyone, whether he is an official or a bus driver, should be respected (A) especially (B) equally (C) naturally (D) normally

28. China recently tightened its waters controls near the Huangyan Island to prevent Chinese fishing boats from in the South China Sea (A) attacking (B) having attacked (C) being attacked (D) having been attacked

29. You had better some time every day for sports so that you can keep yourself energetic (A) set aside (B) take up (C) put away (D) give out