单项选择题
A．A lesson requires students’ active involvement. B．Students usually take an active part in a lecture. C．More knowledge is covered in a lecture. D．There is a larger group of people interested in lessons.
A．A prediction of the future of mankind. B．A new drug that may benefit mankind. C．An opportunity for a good job. D．An unsuccessful experiment.
A．The woman doesn’t think it a problem to get her passport renewed. B．The woman has difficulty renewing her passport. C．The woman hasn’t renewed her passport yet. D．The woman’s passport is still valid.