[单项选择]Although I get my flu shot regularly, I still manage to get ill at least one time each year．The shot (62) your chances of getting influenza up to 90%, (63) you don’t have to stop there．You can (64) improve the odds of staying healthy (65) following a few simple rules．
First, you need to know what you are up against．In addition to the flu, the (66) adult suffers anywhere from one to three respiratory illnesses a year, (67) all of them caused by viruses and most of them (68) in the cooler months．Cold weather also (69) to bring out the kind of bad habits, such as giving up your routine exercise, (70) probably will make you more (71) to diseases．
The reason we get (72) isn’t directly 1inked to cold weather．of course．It’s that we spend more time indoors with other people and their germs． (73) you really wanted to make sure you (74) suffered another cold, y
A. ill
B. afraid
C. ready
D. sorry