听力原文:W: How do you get to Route 22 from the airport?
M: Take the airport exit and immediately get onto Route 1 north. Then right away take the exit for Routes 21 and 22, and follow the signs for 22. On account of the construction, there are several very sharp turns, so be careful.
Q: Why should the woman be careful?
(18)
A.Because the planes turn sharply.
B.Because it is 22 miles.
C.Because there are no signs.
D.Because of driving conditions.
请帮忙给出正确答案和分析,谢谢!