Questions 27~31 refer to the following article. Your nails tell us a lot about your health. Here, we would like to take a look at afew indicators of bad health. First, if your nails are __1__ peeling, itshows that you are not absorbing enough minerals. This could be caused by notchewing your food enough before swallowing. Second, if you see white spots onyour nails, it means that you could possibly be experiencing calcium __ 2__ ； hence, stock yourself up with calcium. Third, if you notice a changein color, more specifically, a yellow color, it could __3__ be fungus.Lastly, if your nails are breaking, do not worry too much；__ 4__ , do paydose attention to it. If nails are breaking, the reason could be as simple as __5__ to water, soap or detergent for too long. If your nails are no longerexposed to water, soap or detergent and the changes persist, go see a doctorimmediately. With the above mentioned tips, I believe you will be able to keepyourself healthy just by looking at your nails.•
【題組】27. Choose the best answer for blank #1.
(A) constancy
(B) constant
(C)constantly
(D)constantan