单项选择题
The scientists made（）plans for landing a man on the moon.
A.acute B.elaborate C.virtual D.delicate
单项选择题 They are giving away free（）of this new kind of cooking oil.
单项选择题 I'm very sorry to have（） you with so many questions on such an occasion.
单项选择题 He bought the house with a(n)（）to making a quick profit out of it.
