In Swift, a sequence of characters surrounded by double quotes is called a ____.

String Literal Special Character Global Variable Literal Expression

In Swift, there are three kinds of statements: simple, compiler control,and _____

Primary Control Flow Soluble Tagged

The most basic of expressions in Swift are called ____ expressions.

Favorite Main Primary Control

Multitasking in iOS was introduced in which version?

iOS 4.0 iOS 2.0 iOS 6.0 iOS 7.0

A category can be used to add new instance variables to a class.

FALSE TRUE May be None of Them