s="Python is cool"，可以输出"python"的是 A: print(s[0:7]) B: print(s[:7].lower()) C: print(s[:-8].lower()) D: print(s[-14:-8])

When will the woman’s plane take off? A: 7:30. B: 7:15. C: 8:30. D: 8:15.

When will the tourists be taken to pay a visit to Dr. Sun Yat-sen's former residence A) At 7:30. C) At 8:00. B) At 7:45. D) At 8:30. A: When will the tourists be taken to pay a visit to Dr. Sun Yat-sen's former residence B: At 7:30. C: At 7:45. D: At 8:00. E: At 8:30.

真空中，光的速度为()m/s。 A: 3.0x10^7 B: 5.0x10^7 C: 3.0x10^8 D: 5.0x10^8

生成: 6 7 8 6 7 8 6 7 8

有以下程序： #include＜stdio.h＞ main() int a=7, b=8, *p, *q, *r; p=＆a; q=＆b; r=p; p=q; q=r; printf("%d, %d, %d, %d\n', *p, *q, a, b); 程序运行后的输出结果是（）。 A: 8, 7, 8, 7 B: 7, 8, 7, 8 C: 8, 7, 7, 8 D: 7, 8, 8, 7

糖尿病患者的呼吸商接近于（） A: 7 B: 85 C: 8 D: 6 E: 1

What is the reduction in the company’s exports（） A: 7% B: 8% C: 9%

下列表达式中值为0的是______。 A: 7/8 B: 7%8 C: 7/8.0 D: 7<8< p=""

When will the tourists be taken to pay a visit to Dr. Sun Yat-sen's former residence A: At 7:30. B: At 7:45. C: At 8:00. D: At 8:30.