下列 Python库或模块中，支持正则表达式语法的是____。 A.
bs4 B.
lxml C.
re D.
json

Directions: For each numbered blank in the following pa...

单项选择题 Directions: For each numbered blank in the following passage there are four choices labeled [A], [B], [C], and [D]. Choose the most suitable one.
Our leisure will be different too. The home will become the center of entertainment through television and electronic games. More people will eat out in restaurants ______they do today; also they will have a much wider variety of food available.

下列化合物哪个水解速度最快  A     A 乙酰氯 B 乙酸乙酯 C 乙酸酐 D 乙酰胺 A、yes B、x...

单项选择题下列化合物哪个水解速度最快  A    
A 乙酰氯 B 乙酸乙酯 C 乙酸酐 D 乙酰胺
A、yes
B、x
C、x
D、x

定义类A和组合类B：class A { private:  int x; public:  int y; };...

单项选择题 定义类A和组合类B：class A { private:  int x; public:  int y; }; class B { public:  A t;     int s; }
使用组合类B定义对象：B obj; 下列语句中正确的是（    ）。