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STEAM教育|编程练习|每日一练(249)

  • 2026-02-07 13:59:53
STEAM教育|编程练习|每日一练(249)

每/日/一/练

  知识如海,学无止境  

  Scratch   

角色初始位置在舞台左侧,下列哪个选项可以实现,按下空格键后,角色从舞台左侧移动到黑板前,切换成下一个造型?(   )

【上期答案】A

【上期题目指路】STEAM教育|编程练习|每日一练(248)

【题目解析】: 

选项A按下空格键后,篮球会从球筐中掉落到地上再弹回空中,符合题意;选项B按下空格键后,篮球会从球筐中弹到舞台左上角;选项C按下空格键后,篮球会从球筐中掉落到地上再移动到舞台右侧;选项D,按下空格键后,篮球会从球筐中掉落到地上再移动到舞台左侧。因此选项A正确。

   python   

假设a = 0.6,b = 0.4,c = a + b,那么c的值是?( )

A 1

B 1.0

C 1.00

D 0.4

【上期答案】B 20.0

【题目指路】STEAM教育|编程练习|每日一练(248)

【题目解析】:     

在在Python中,`float()`函数的作用是将一个数值或可转换为数值的对象转换为浮点数类型。 
 当我们将整数`20`作为参数传入`float()`函数时,`float(20)`会把整数`20`转换为浮点数形式,也就是`20.0`。 
 然后使用`print()`函数输出这个浮点数,所以输出的结果是`20.0`。

   C++   

C++的整型变量N被赋值为10,则语句cout << N / 4 << "->" << N % 4 << "->" << N / 4.0执⾏后输出是2->2->2.0。 ( )

A 正确

B 错误

【上期答案】: B 错误

【题目指路】STEAM教育|编程练习|每日一练(248)

【题目解析】

题目没有指明变量X的类型,故答案为错误

快在评论里写出你本期的答案吧!

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  1. CONNECT:[ UseTime:0.000521s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000775s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.005161s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.003280s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000640s ]
  6. SELECT * FROM `set` [ RunTime:0.003610s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000645s ]
  8. SELECT * FROM `article` WHERE `id` = 469829 LIMIT 1 [ RunTime:0.006475s ]
  9. UPDATE `article` SET `lasttime` = 1770466556 WHERE `id` = 469829 [ RunTime:0.001872s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.001668s ]
  11. SELECT * FROM `article` WHERE `id` < 469829 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001025s ]
  12. SELECT * FROM `article` WHERE `id` > 469829 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.017419s ]
  13. SELECT * FROM `article` WHERE `id` < 469829 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.021918s ]
  14. SELECT * FROM `article` WHERE `id` < 469829 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.030782s ]
  15. SELECT * FROM `article` WHERE `id` < 469829 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.037310s ]
0.199490s