四、阅读表格，选择正确的答案。
Read the table and answer the questions. It shows how metro, bus, and bike are different.

()1. What is the fastest(最快的)way to work in the table?
A. By metro.
B. By bus.
C. By bike.
()2. If you don't want to use money, which way can you choose?
A. By metro.
B. By bus.
C. By bike.
()3. If you want the easiest(最简单的)way to go to work, what should you choose?
A. By metro.
B. By bus.
C. Both A and B.
()4. Why might someone ride a bike?
A. Because it's fast.
B. Because it's good for the environment.
C. Because it's the easiest way.

1~4 ACAB
1. fastest 意为“最快的”，三种交通方式中最快的是地铁，故选 A。
2. 由表格中“No money”得知，自行车不花钱，故选 C。
3. easiest 意为“最简单的”，乘地铁是最简单的，故选 A。
4. 骑自行车对环境有益，故选 B。