No other drug is available at present __ can produce the same therapeutic effect with less risk.
A．that
B．than
C．when
D．as
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The traditional Navaho does not allow copying of sandpaintings because____ .
[A] it is against Navaho belief system
[B] this is a craft exclusive to the supernatural
[C] anything copied is considered worthless
[D] the copying may bring harm to other Navahos -
The "singer" treats the patient by ____ .'
[A] rubbing the patient's body with sand from a sandpainting figure
[B] destroying the sandpainting figure of a supernatural being
[C] transferring his supematural power to the patient
[D] applying a magic substance to the patient's body -
Man: I've been waiting all week for this concert. The performance is said to be excellent and with a student discount, the tickets will be really cheap. Woman: Ah-huh. I'm afraid I left my student ID card in the dorm. Question: What does the woman imply？
A．She wants to borrow the man's student ID card.
B．The tickets are less expensive than she expected.
C．She won't be able to get any discount for the ticket.
D．The performance turned out to be disappointing. -
The text indicates that the Canadian airport. officials seem to have _____ .
[ A] taken effective measures to solve the car-theft problem
[ B] overestimated the seriousness of the car-theft problem
[ C] failed to give proper attention to the car-theft problem
[ D] realized the seriousness of the car-theft problem -
[A] least
[B] best
[C] most
[D] last