四、(2024·常州市第二十四中一模)信息还原。
Look at your computer keyboard. Have you ever wondered why the letters on a keyboard are not in “ABC” order?
The keyboard we use every day is called the QWERTY keyboard layout(布局). Q, W, E, R, T, Y are the first six letters on this layout, starting from the top left. 1 The first typewriter（打字机）, with a keyboard which looked like a piano, was invented in the late 19th century. 2 However, it was later discovered that as the typing speed increased, some keys failed to come back to their places quickly. As a result, they got jammed(卡住) very easily. Most typists（打字员） ended up breaking the typewriter altogether when separating the keys. 3 It turned out to be a great success. It placed keys in such a way that the most used letters were spaced out so that the keys were more likely to work freely.
4 With the arrival of the computer, the typists in offices were the same people who were to now operate computers. This meant the typists had to be trained to use the new device. But training required too much time and money. It was easier to design the keyboards following the layout of typewriters, which was the QWERTY layout, and this continues even today. It is very difficult now to get people to change to any other keyboard layout.
95
A. Some inventors built a typing machine.
B. However, another problem came about in the 1940s.
C. The typewriter did have the ABC keyboard layout like a piano.
D. To solve this problem, the QWERTY keyboard was developed.
E. Here are some tips to help you get used to the QWERTY keyboard.
F. To understand why we went with QWERTY, we need to go back in history.

1.F 2.C 3.D 4.B