Đâu là công trình nghiên cứu của Hi-pô-lít Ten?

The wordstrategiesin paragraph 3 mostly means ________.

21 ______, a world of information is at our fingertips with a click of a button or a simple voice command.

Which of the following can be inferred from the passage?

Which of the following is true according to the passage?

The word guide in paragraph 3 is opposite in meaning to _______.

The wordcopein paragraph 2 can be best replaced by _______.

According to paragraph 2, teenagers’ doubts about their parents ______.