单项选择题
A. Most inexpensive B. Save money C. Low cost D. Economically
What is the meaning of Metropolitan area? （）A. Around t...
单项选择题What is the meaning of Metropolitan area? （）
A. Around the city B. City itself C. The area near the city D. Big city and its neighbor area
Railroads own about （）of their car fleet.A.HalfB.80%C.2...
单项选择题Railroads own about （）of their car fleet.
A.Half B.80% C.20% D.Not mentioned
The advantage of rail transport is （）A. Great amount of...
单项选择题The advantage of rail transport is （）
A. Great amount of shipped B. Less damage ration C. Fast speed, exact schedule, and cost saved D. Direct shipping line
