21.—Which of the two English films do you like better?
— shorter one, of course. I think it’s really most instructive one.
A. A；the B. The；the C. The；a D. A；a
22. A health care project can provide treatment ____half the cost or less, ____the needs of the patient.
A. at, relied on B. with, relying on C. at, relying on D. by, relies on
23. A harmonious society is very important , so all the laws must be strictly ______.
A. watched B. observed C. carried D. handled
