[听力原文]M: I hope the bank will be open.W: The sign says: 9:00 a.m. to 5:00 p.m. weekdays; 9:00 a.m. to 12:00 noon Saturdays; closed Sundays. When will the bank be open on Saturdays（） A: It’s closed. B: 12 noon to 9 p.m. C: 9a.m. to 5 p.m. D: 9a.m. to 12 noon.

M: I hope that the bank will be open.W: The sign says: nine a.m. to five p.m. weekdays, nine a. m. to twelve noon Saturdays, closed Sunday. When will the bank be open on Saturday() A: 12 noon to 9 p.m. B: 9a.m. to 5 p.m. C: 9a.m. to 12 noon.

要判断char型变量m是否是数字字符，可以使用表达式() A: 0<=m && m<=9 B: '0'<=m && m<='9' C: "0"<=m && m<="9" D: 0<=m & m<=9

M: I hope that Mr. Wang will be in the office.W: Well he usually works from 8:00 a.m. to 5:00 p. m... On Saturdays and Sundays, he works from 9:00 a.m. to 12:00 noon. When will Mr. Wang begin to work on weekends（） A: 5 p.m. B: 12 noon. C: 8a.m. D: 9a.m.

执行i=8;m=++i;语句后，i和m的值分别为（）。 A: i=9,m=9 B: i=8,m=8 C: i=8,m=9 D: i=9,m=8

1.已知点P(9－m，m＋2)在第一象限，则m的取值范围是( ) A: －2<;m<;9 B: －9<;m<;2 C: m>;－2 D: m<;9

已知三个不等式：①x2-4x+3＜0，②x2-6x+8＜0，③2x2-9x+m＜0，要使满足①和②的所有x都满足③，则实数m的取值范围是（）。 A: m＞9 B: m＜9 C: 0＜m≤9 D: m≤9

Breakfast is _____ from 7a.m. to 9a.m. in the morning. A: celebrated B: served C: lie D: leave

为判断char型变量m是否是数字，可以使用下列表达式()进行判断。 A: 0<=m && m<=9 B: '0'<=m && m<='9' C: "0"<=m && m<="9" D: 前面三个答案均是错误的。

m=hist( x ， 9) 中的变量 m 是一个 9 维的向量。