函数可以带参数和返回值,参数将按从左到右的匹配,参数可设置默认值,当使用函数时没给相应的参数时, 会按照默认值进行赋值
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定义在函数内部的变量就是局部变量,只能在其被声明的函数内部被访问。
A. 对
B. 错
一旦变量被定义为全局变量后,在程序任何地方都可以访问,不可以修改。
A. 对
B. 错
No other drugs are as good as this one; it must have been based on a(n) ________ formula (配方).
A. enormous
B. stimulating
C. unique
D. overwhelming
Mothers tend to be too ________ toward their children. They should let them see more of the world.
A. hopeful
B. protective
C. modest
D. encouraging
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