完型填空（共20小题，每小题1.5分，共30分）
阅读下列短文，掌握其大意，然后从每题所给的A、B、C、D四个选项中，选出最佳选项。
If we were to keep a record of all the things we worried about during a given period of time，we would discover—in reviewing them—that the great majority of our     16     never come to pass. This means that most of the time we     17     to worrying，even the constructive（建设性的）kind that prompts us to try to come up with a     18     to what is troubling us，is wasted.     19   ，we not only caused ourselves unnecessary mental pain，but also    20   valuable minutes and hours that could have been spent elsewhere.
To     21     this，it is often necessary to subject（使……遭受）potential     22     of worry to the coldly objective. Once，before a major     23     in front of a standing-room-only audience，a member of Arturo Toscanini’s orchestra approached（接近）the great Italian conductor with a terrible    24   on his face．“Maestro（大师），”the musician said     25   ，“my instrument is not working     26   ．I cannot reach the    27    of E-flat．Whatever will I do？We are to     28     a few moments later．”
Toscanini looked with total     29      at the man．Then he    30     kindly and placed an arm around his shoulders．“My friend，”the maestro replied，“do not worry about it．The note E-flat does not    31   anywhere in the music that you will be    32   this evening．”
The next time we find ourselves in the middle of     33     about some matter，we might be wise to    34    and ask ourselves what the odds（几率）are of the problem really coming to    35   .We may be able to go on to something more constructive．
16．A．dreams                         B．ideas                    C．troubles              D．failures
17．A．spend                            B．devote                          C．expect                           D．agree
18．A．solution                        B．suggestion                   C．promise               D．plan
19．A．However             B．Otherwise          C．Then                     D．Therefore
20．A．paid back            B．cut down             C．acted out            D．took up
21．A．realize                         B．organize              C．avoid                    D．operate
22．A．sources              B．success                         C．truth                    D．gifts
23．A．graduation                 B．concert                         C．meeting              D．invitation
24．A．sign                      B．appearance                 C．mark                    D．expression
25．A．anxiously             B．finally                            C．eagerly                         D．seriously
26．A．properly              B．mainly                           C．practically           D．firmly．
27．A．part                      B．point                    C．signal                            D．note
28．A．complete            B．begin                    C．manage               D．separate
29．A．pleasure              B．regret                           C．silence                          D．amazement
30．A．shouted                        B．depended           C．smiled                           D．explained
31．A．appear                          B．remove                         C．unfold                 D．disappear
32．A．enjoying              B．1istening             C．playing                          D．conducting
33．A．talking                           B．worrying             C．quarreling           D．doubting
34．A．prevent                         B．trust                     C．finish                    D．stop
35．A．end                       B．pass                     C．order                    D．settle