阅读短文，选择最佳选项。
The post office has plenty of work to do. It handles (处理) thousands of letters every day. Let's follow a
letter all the way across America.
Julie lives in New York. She wrote a letter to Dave. Dave lives in Oregon. Julie put the letter in the mailbox
(邮箱) on Monday night. On Tuesday morning a truck stopped at the mailbox. The mail carrier (投递员) put the
letters into a large bag and took the bag to a post office in New York.
On Tuesday afternoon the letters were sorted. Zip codes were used to sort the mail. A machine picked up
a letter and held it. A worker read the zip code. Then the worker pushed five buttons on another machine. The
worker had only one second to do this. After the worker pushed the buttons, the machine put the letter in a box.
By Tuesday night the box was on a truck. The truck went to the airport. An airplane took off for Oregon on
Wednesday morning. Julie's letter went on the airplane.
By noon the letters were in an airport in Oregon, Mail trucks then took them to post offices. One of these
was in Dave's town. On Wednesday night people in Dave's town sorted the letters by street name.
On Thursday morning the mail carrier for Main Street picked up her pile of letters. She sorted a11 of them
by street address before delivering (递送). The people at 1 Main Street got their mail first. Dave lived at 221
Main Street. He got his letter before lunch.
1. Where did Julie's letter travel first?
[ ]
A. To a post office in New York.
B. On a truck that went to the airport.
C. To a post office in Oregon.
D. On the airplane for Oregon.
2. What does the underlined word "Zip codes" mean in Chinese?
[ ]
A. 密码
B. 电话号码
C. 邮政编码
D. 身份证号码
3. The title of the passage is ______.
[ ]
A. How a Letter is Written
B. How Mail Is Delivered
C. How a Letter Gets to the Airport
D. How a Machine Picks up Letters