四、(常州溧阳市期末)阅读短文，选择正确的答案。

Long ago, we had the “Four Great Inventions”. They were papermaking, printing, gunpowder and the compass. Papermaking made it easy to keep records(记录). Printing helped people make books very quickly and cheaply. Gunpowder was used at festivals and later in mining(采矿业). The compass helped explorers(探险者) find their way on the sea.
Now, China has “New Four Great Inventions”. They are the high-speed train, mobile payment, bike-sharing and online shopping. They are very popular in our life. The high-speed train is fast, clean and comfortable. It makes travel between cities very easy. With mobile payment, people just use their phones to pay for things. It’s very convenient. Bike-sharing makes it easier for people to travel around the city. Online shopping lets people buy almost everything without going out.
From the old four to the new four, Chinese inventions always make our life better.
()1. What was the use of the compass in the old times?
A. Keeping records. B. Using at festivals. C. Helping explorers on the sea.
()2. How is the high-speed train according to the passage?
A. Cheap and slow. B. Expensive but slow. C. Fast, clean and comfortable.
()3. The part “lets people buy almost everything without going out” tells us how helps us.
A. mobile payment B. online shopping C. bike-sharing
()4. What is the passage mainly about?
A. The life in ancient China. B. How to use the four new inventions. C. Chinese inventions in the past and now.