题目内容：
Eye Movement and Several Faults in ReadingSuppose you do this experiment with a friend. Get hold of a book with a large page size and lines that run right across the page. Get your friend to hold the book up and to read it with the top of the book just below his eye level. This means that you can watch the movement of his eyes as he reads the page. If you do this, you will see .that your friend's eyes do. not make a continuous forward sweep. Instead, they progress by little "jumps", moving, then Stopping, as they progress along the line. This kind of jumping movement is called a saecadic movement(跳跃).
There has to be this starting and stopping movement because the eye can see only when it is still, i.e. motionless, Every time the eye pauses it sees a phrase or even a sentence, then jumps to the next part of the line and so on.
There is another interesting fact about eye movement. If you record the eye movements of someone who is reading, you will notice that, from time to time, the reader goes back and looks again at something he has read before；in other words, he regresses(回视)an earlier part of the text, probably beeausehe realizes he does not understand the passageproperly. Then he comes back to where he left off and continues reading.
At one time, it was though that regression was a fault, but itis in fact a very necessary activity in efficient reading.
There are several different kinds of faults in reading, which are usually more exagger-.ated with foreign language learners. The most common one is that most people read everything at the same slow speed, and do not seem to realize that they can read faster or slower as required. Other people say the words to themselves, or move their lips--these habits slow the reader down to something near speaking speed, which is, of course, much slower than reading speed. Another habit that can slow you down is following the line with your finger, or with a pen.What phenomenon can you see in the experiment mentioned at the beginning of the passage? A．People's eyes sweep forward continuously while readin
B．People's eyes do not make a forward sweep while readin
C．People's eyes do not "jump" forward while readin
D．People's eyes move forward in a "jumping" way while readin
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