txt = open(""book.txt"", ""r"") print(txt)txt.close()" "文件 book.txt 在当前程序所在目录内，其内容是一段文本：book，上述代码的输出结果是( ) A: txt B: book C: 其余答案都不对 D: book.txt

文件 book.txt 在当前程序所在目录内，其内容是一段文本：'book'，下面代码输出结果是‬（ ）。txt = open("book.txt", "r") print(txt) txt.close() A: book B: book.txt C: 无正确选项 D: txt

文件book.txt在当前程序所在目录内，其内容是一段文本: book，下面代码的输出结果是()txt = open("book.txt", "r") print(txt) txt.close() A: book.txt B: book C: txt D: 以上答案都不对

Word中插入数学公式的方法是（）。 A: "插入"→"形状"→"公式" B: "开发工具"→"公式" C: "插入"→"公式"→"插入新公式" D: "引用"→"插入"→"公式"

Stacey DeBroff, a famous writer on parenting, agrees with Amy Chua, author of the disputable book "Battle Hymn of the Tiger Mother“, totally in her way of parenting. A: 正确 B: 错误

定义并初始化一个用于存放我们国家的四个直辖市的数组cityName，四个直辖市为：北京，上海，天津，重庆. 正确的是_________ A: String[] cityName=new String[4]{"北京","上海","天津","重庆"}; B: String[] cityName=new String[]{"北京","上海","天津","重庆"}; C: String[] cityName={"北京","上海","天津","重庆"}; D: String cityName = new String[4] { "北京", "上海", "天津", "重庆" };

Which of the following statements about Double Ninth Festival is NOT true? A: It’s on the 9th day of the 9th lunar month (usually falls in October in the Gregorian calendar). B: In an ancient and mysterious book Yi Jing, or The Book of Changes, number "9" was thought to be Yin, meaning feminine or negative. C: The Double Ninth Festival is also called "Height Ascending Festival". D: Younger generations will bring elder ones to suburban areas or send gifts to them on this day.

已知有一个名为names的空列表,如何向其中添加old_driver,rain,jack,shanshan,peiqi,black_girl 元素？ A: names.append("old_driver","rain","jack","shanshan","peiqi","black_girl") B: names.extend("old_driver","rain","jack","shanshan","peiqi","black_girl") C: names.insert("old_driver","rain","jack","shanshan","peiqi","black_girl") D: names.extend(["old_driver","rain","jack","shanshan","peiqi","black_girl"])

以下哪个选项是正确的json数据格式： A: { "id": 2, "userName": admin, "passWord": 12345, "email": admin@qq.com} B: { id: 2, userName: "admin", passWord: "12345", email: "admin@qq.com"} C: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com",} D: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com"}

把一个JSON格式数据赋给变量color：color = &quot色彩":[ &quot暖色":[&quot红",&quot橙",&quot黄"], &quot冷色":[&quot青",&quot蓝"], &quot中性色":[&quot紫",&quot绿",&quot黑",&quot灰",&quot白"] ]以下能够取到冷色“[&quot青",&quot蓝"]”的是哪一个选项？_