Which of the following sounds the politest? A: Come to my office at 5 o’clock. B: Please come to my office at 5 o’clock. C: Please come to my office around 5 o’clock. D: Could you come to my office around 5 o’clock?

Pick me up at 8 o’clock. I_______ my bath by then.

Can I a table for five this evening at 8 o’clock? My name’s Taylor.

准确滴定单一金属离子的条件是( )() A: lgCM K′MY≥8 B: lgCM K′MY≥6 C: ΔlgCM K′MY≥5 D: C K′MY≥8

T/F question 793I see fire at my 9 o’clock, about 8 miles.[音频]

Spot dictation 793 I see __________ ___________ at my 10 o’clock, about 8 miles. [音频]

Pick me up at 8 o'clock. I ________ my bath by then. A: may have B: will be having C: will have had

以下不能正确进行字符串初始化的语句是： A: char str[5] = "good!"; B: char str[5] = {'g', 'o', 'o', 'd', '!'}; C: char str[] = {'g', 'o', 'o', 'd', '!'}; D: char str[] = "good!"; E: char str[8] = "good!"; F: char *str = "good!"; G: char str[8] = {'g', 'o', 'o', 'd', '!'};

配位滴定的条件是 A: 1gK MY≥8 B: 1gk′MY≥8 C: 1gC•KMY≥8 D: 1gC•K′MY≥8 E: 1gC•K MY≥6

以下哪种情况应优先采取措施___。 A: S=9、O=3、D=3 B: S=3、O=9、D=3 C: S=3、O=3、D=9 D: S=5、O=8、D=8