Paper-making， printing techniques， gunpowder and the compass are known as ancient China's Four Great Inventions． Now China is developing very fast and some young foreigners are amazed at some new technologies． They call them Four New China's Achievements in a recent street interview． Here are some of what they said．

High-speed rail（HSR） in China is the most heavily used in the world． China's trains are very clean， comfortable， a trip which takes 14hours by car only takes 5hours by the train． Peter from Romania	Alipay is really helpful when paying． In Hangzhou， you only need to take a phone with you when going outside． Even in Nepal， Alipay is also widely used now． Nabina from Nepal
The shared bike is convenient． I use it from subway or bus stations． I love it． it saves me a lot of time and I only pay about 1yuan（＄0.15）for every 30-minute ride． Agra from India	I was told that China had amazing online shopping choices and impossibly quick service． Now I'm totally in love with Taobao． You can almost find anything you want on it． Ban from Thailand

(1) According to the passage， which is NOT ancient China's Four Great Inventions？ ______

A. Printing techniques．	B. Gunpowder and the compass．
C. Paper-making．	D. Shared bikes．

(2) What does Peter think of the high-speed railways in China according to his words？ ______

A. Fast and tidy．	B. Convenient but crowded．
C. Cheap and amazing．	D. Slow but comfortable．

(3) Alipay is used ______ ．

A. to make wallets	B. only in China
C. between buyers and sellers	D. for making calls

(4) What conclusion（结论）can we draw about the Four New China's Achievements？ ______

A. They were created by young foreign people．

B. They are the signs that China is improving quickly．

C. They were brought to the countries near China．

D. They were not only convenient but also free to use．