In the United Sates, it is respectful to call a stranger grandma if she is of old age. ( )

中国大学MOOC: The density of sates g(E) is a step-like function, and is finite at E1 and E1¢.

The North American Free Trade Agreement includes ________.A) Mexico, Canada, and the United StatesB) Canada, Mexico, and Costa RicaC) the United States, Canada, and HondurasD) Columbia, Mexico, and the United Sates A: Mexico, Canada, and the United States B: Canada, Mexico, and Costa Rica C: the United States, Canada, and Honduras D: Columbia, Mexico, and the United Sates

Which of the following should NOT be considered as vocabulary? A: workshop B: pull one’s leg C: the United Sates D: read a book