The loose sentence is simple and natural, so theadvantage of the loose sentence is that it is usually smooth,flowing, and conversational.()

“Have you finished your exercise yet?”属于提问语，不是指令语。 ...

判断题“Have you finished your exercise yet?”属于提问语，不是指令语。
正确
错误

set1={15,16,17,18} for i in set1:     print(i, end=" ")...

判断题set1={15,16,17,18}
for i in set1:
    print(i, end=" ")
以上程序段的输出结果一定是：15 16 17 18

变异型心绞痛选用 A、对乙酰氨基酚 B、普萘洛尔 C、硝苯地平 D、卡马西平 E、山莨菪碱

单项选择题变异型心绞痛选用
A、对乙酰氨基酚
B、普萘洛尔
C、硝苯地平
D、卡马西平
E、山莨菪碱