How many times does the heart beat in a day? The answer depends on the person. A little baby’s heart is smaller and it has to beat more often to do its job of __36__ the blood around the baby’s body. Women are often smaller than men, so their hearts __37__ to beat more often than many men’s heats do. __38__ we exercise, we increase the need in our cells for energy and oxygen. The heart pumps faster __39__ exercise. So the heart beats more often in a day with a lot of exercise. For the same __40__ ,our hearts beat slower when we sleep because our bodies are resting and not making such a big __41__ for energy and oxygen. The hearts of people who are __42__ fit beat fewer times in a day. Lots of other things like age, body size, and emotions can __43__ how fast or slow our hearts beat. A little baby’s heart rate is between 90 and 140 beats per minute. An adult’s heart rate is more likely to be about 72 beats per minute. We can __44__ how many beats in a day using multiplication. So, you can be __45__ sure that your own heart is beating between 100,000 and 200,000 times every single day. In one day it can move 4,300 gallons of blood! 36（） A.bringing B.fetching C.moving D.taking 39（）A.above B.Before C.During D.without 43（）A.affect B.Effect C.reflect D.select 44（）A.take out B.put out C.get out D.figure out 45（）A.hardly B.Nearly C.Pretty D.seldom 40（）A.purpose B.reason C.time D.way 42（）A.Physically B.mentally C.spiritually D.technically 37（）A.want B.tend C.pretend D.like 41（）A.attempt B.claim C.demand D.desire 38（）A.Unless B.Until C.Though D.When