All the definitions(定义) and facts in a dictionary or book do not convey what friendship is

All the definitions(定义) and facts in a dictionary or book do not convey what friendship is really about. It cannot be understood through   36 . The only way to understand friendship is through experience, which   37  all the senses.
Friendship can be seen. It is seen in an old couple sitting in the park holding hands. It is seen in a child freely   38  the last cookie. It is not   39  to see friendship; it is always there for eyes that can see.
Friendship can be heard. It is heard in the words of two friends squeezing in lunch together on an extremely   40  day although they have a lot of things to do. It is the way they   41  each other, not the words. Friendship can be heard by those willing to listen.
Friendship is   42  in a touch. It is a pat on the back from a teammate, a high five between classes, and the wet kiss from the family dog. The touch   43  more than words or gestures. It is   44  understood and clearly shows the feelings.
Friendship has a taste. It tastes like homemade bread: the ingredients all measured and planned, then carefully   45 , then the quiet   46  as the dough(生面团) rises. Hot from the oven, the bread tastes more than the sum of its ingredients   47  there are the thoughts of the baker as her hands mix the flour or her   48  as she waits for the dough to rise.  49  and unmeasured, this is the ingredient that   50 . Warm, fresh from the oven, the difference you taste is   51 .
Friendship has a smell. It smells like the slightly burnt cookies your brother made especially for you. It smells like your home when   52  it after being away for a long tome. Friendship has   53  smells.
Finally, more than the other senses, friendship is a(n)  54  of the heart. It is the language of the heart --- a language that, whether seen, felt, heard, or tasted, is understood by the   55 . Like air fills the lungs, friendship fills the heart, allowing us to experience the best life has to offer: a friend.
【小题1】A．readingB．studyingC．wordsD．gestures【小题2】A．expectsB．involvesC．affectsD．expresses【小题3】A．eatingB．holdingC．choosingD．sharing【小题4】A．monB．formalC．difficultD．private【小题5】A．busyB．toughC．badD．important【小题6】A．look atB．talk toC．care for D．play with【小题7】A．feltB．givenC．discoveredD．remembered【小题8】A．understandsB．explainsC．municatesD．knows【小题9】A．perfectlyB．instantlyC．hopefullyD．thankfully【小题10】A．tastedB．preparedC．mixedD．supplied【小题11】A．waitingB．workingC．changeD．petition【小题12】A．andB．becauseC．untilD．unless【小题13】A．patienceB．confidenceC．toleranceD．dependence【小题14】A．UnfinishedB．UncoveredC．UnseenD．Unmoved【小题15】A．es to lifeB．makes the differenceC．makes senseD．takes effect【小题16】A．happinessB．fortC．friendshipD．hardship【小题17】A．winning backB．stepping intoC．helping outD．carrying on【小题18】A．strongB．strangeC．naturalD．various【小题19】A．experienceB．thoughtC．rewardD．result【小题20】A．partnersB．sensesC．heartD．familyC