认真阅读下面代码，并按要求进行作答。txt1="What a very";txt2="nice day";txt3=txt1+txt2;根据上述代码，txt3的运算结果是（ ） A: What a very nice day B: What a verynice day C: What a very D: nice day

执行下述语句后的结果是enum weekday {sun, mon=3, tue, wed, thu}; enum weekday day; day = wed; printf("%d ",day); A: 5 B: 3 C: 4 D: 编译时出错

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"

According to the story " the God's Creation" in the Bible, in the______ day God create man in His own image? A: 1st B: 4th C: 6th D: 7th

有1020个西瓜，第一天卖一半多两个，以后每天卖剩下的一半多两个，问几天后能卖完？补全缺少的代码#include <stdio.h> int main() { int day = 0, x1 = 1020, x2; while (_____________) { x2 = _____________; x1 = x2; _____________; } printf("day = %d ", day); return 0; } A: 第一句： x1第二句：x1/2-2第三句： day++ B: 第一句： x1！= 0第二句：x1/2-2第三句： day = day + 1 C: 第一句： x1 = 0第二句：x1/2-2第三句： day++ D: 第一句： x1 ==0第二句：x1/2-2第三句： day = day + 1 E: 第一句： x1 == 0第二句：x1/2 + 2第三句： day++

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" };

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？_

在Excel中,为表格添加边框的正确的操作是()。 A: 单击"单元格"中的"边框" B: 单击"单元格"中的"边框和底纹" C: 单击"插入"中"边框" D: 单击"插入"中"单元格"