I would prefer shopping online to shopping in a department store because （）(它更加方便和省时).

A．There is no strict control over the academic standards of the courses.
B．The evaluation system used by online universities is inherently weak.
C．There is no mechanism to ensure that they make the required effort.
D．Lack of classroom interaction reduces the effectiveness of instruction.

A．She believed she possessed real talent for writing.
B．She was sure of winning with her mother’s help.
C．She wanted to share her stories with readers.
D．She had won a prize in the previous contest.

A．derived
B．divided
C．descended
D．distinguished

A．earn their academic degrees with much less effort
B．save a great deal on traveling and boarding expenses
C．select courses from various colleges and universities
D．work on the required courses whenever and wherever