【小题1】According to a review of evidence in a medical journal, runners live three years __________ (long) than non-runners.
【小题2】That makes her baby scream, and then a 400-pound male appears. He screams the __________(loud) of all.
【小题3】The birth rate in the 21st century may be much __________ than it was in the 20th.
【小题4】As    （a）   result, people will eat more food to try to make up for that something missing. Even __________ (bad), the amount of fast food that people eat goes up.
【小题5】The central London Railway was one of the most __________(success) of these new lines, and was opened in 1900.