(B) "I felt a nightmare sensation of falling; and, looking round, I saw the laboratory exactly as before. Had anything happened? For a moment 1 suspected that my intellect had tricked me. Then I noted the clock. A moment before, as it seemed , it had stood at a minute or so past ten; now it was nearly half-past three! " I drew a breath, set my teeth, gripped the starting lever with both hands, and went off with a thud." ("The Time Machine", 2008)
(C) As it seems she does not want to change.
(D) Studying abroad was as good an experience as it seemed.
I'm very interested in what the expression "as it seems" means.
Would you mind telling me if you feel any difference in nuance among the four usages of the phrase above?