The biggest challenge faced by travelers especially those who like to have a backpacking trip is how to ensure a steady supply of clean clothes. Now thanks to a great invention called Scrubba Wash Pack, that worry may be a thing of the past.

    The portable washing machine was invented by Ash Newland in 2010, while he was planning a six week trip to Africa. Struck by the limited packing space for only a few changes of clothes, he got inspiration from traditional washboards (搓衣板) to create a bag that could be used to clean clothes. Then he quitted his career as a lawyer and focused on perfecting the bag's design. By 2012, the bag was ready for the public. Called as “the world's smallest washing machine,” it weighed only 180 grams and required very little storage space, making it perfect for anyone wishing to travel light.

    Not surprisingly, the bag worth 55 dollars was an instant hit with travelers, university students and even passengers. However, Newland was not satisfied. He still saw a significant flaw with his invention-dirty clothes had to be carried around in a separate bag! The recently introduced Scrubba Wash Pack solves that problem. The waterproof pack can be used to transport clean clothes and wash them whenever the need arises.

    In order to make the pack active, dirty clothes are placed inside the bag along with two to three liters of water. The bag is then shut tightly to ensure all air is squeezed out and the clothes massaged (揉) for a few minutes. A quick wash and they are clean and ready to be dried. According to Newland, the pack can clean anything-from jeans to smelly socks! What's even more amazing is that with a capacity to hold 13-liters of water, it can be used to wash more clothes at a time.

    The best part is that 99-dollar pack that will be available for sale later this year, only weighs 300 grams and is completely foldable, making it easy to store when not in use. With the Scrubba Wash Pack, wandering through foreign cities searching for a washing shop, or paying for washing machines may soon be a thing of the past!

(1) Scrubba Wash Pack is mainly intended to ________.
A. guarantee a fresh supply of clothes to travelers B. help travelers forget the unhappy things in the past C. save electricity and water for travelers during their trips D. solve some unexpected problems travelers meet during their trips
(2) What led Ash Newland to create the Scrubba Wash Bag?
A. The traditional washing machine. B. A strong desire to travel light. C. The trouble he met while planning his trip. D. One of his small backpacks.
(3) Ash Newland wasn't happy with his invention mainly because ________.
A. dirty clothes couldn't be washed well B. dirty clothes must be kept in a separate bag C. the pack couldn't contain enough water D. the pack couldn't wash smelly socks
(4) What can we learn about the Scrubba Wash Pack from the passage?
A. It will replace the traditional washing machine. B. It is more expensive than the traditional washing machine. C. It will be widely used by more travelers in the future. D. It makes it more convenient for people at home.