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(B) N and M
(C) O and P
(D) Q and N
(E) Q and P
20. It must be true that traffic moves in
(A) opposite directions on M and R
(B) opposite directions on P and Q
(C) the same direction on O and P
(D) the same direction on O and Q
(E) the same direction on O and R
21. If traffic moves east on Q, which of the following must be true?
Ⅰ.Traffic on M can make a left turn onto Q.
Ⅱ. Traffic on R can make a left turn onto Q.
Ⅲ. Traffic moves east on O.
(A)Ⅰonly
(B)Ⅱonly
(C)Ⅰand Ⅱ only
(D)Ⅱand Ⅲ only
(E)Ⅰ,Ⅱ, and Ⅲ
22. If traffic moves west on P, which of the following must be true?
(A) Traffic can proceed on P across M and then make a right turn onto N without first leaving P.
(B) Traffic can proceed on R across P and then make a right turn onto Q without first leaving R.
(C) Traffic can proceed on R scores M and then make a right turn onto N without first leaving R.
(D) Traffic on R that reaches the intersection of R and O can make a left turn onto O without first leaving R.
(E) Traffic on P that reaches the intersection of P and R can make a right onto R without first leaving P.
Which of the following conclusions can most properly be drawn from the information above?
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