Word came that the government must control the spread of this disease.“Our job，”said the　26　officer， Word came that the government must control the spread of this disease. “Our job，”said the　26____officer，“is to spray the wall of every house in every town and village in the malariaparts of Mexico.You may be____27　to learn that there are about ninety-nine thousand　28____villages and towns.Some are big places like the capital city，　29　a re single houses deep in the forest or upon the mountaintops.The men working with our program say that most of these people____30　within districts which are 31 enough for the mala ria-carrying mosquitoesto live in and spread the disease.That 32 that we must plan to spray the bricks of____33　three million houses once or twice a year for five years.” “We have　34　everything very carefully，”said the officer　35　.“Our advance guards have drawn 36 ____of some forty thousand parts of the country for　37　by the spray teams.Each house in the malaria districts has been given a special　38　so that we can work in order.The United States has given us cars and trucks to carry the spray teams and their 39 ____.” “The malaria program has been　40　with the people in this country.Everyone wants to　41　.The Defense Department is helping us plan the 42 ____of men and supplies.The Education Department has printed sheets in Spanish to explain 43 ____malaria is spread.Resistance is a problem.It was in the neighboring country—the United States that such resistance to spray was first　44　.Take the　45　of the housefly and D.D.T. At fist D.D.T. killed them off.Now it won’t hurt a fly.” “What worries people is the danger that the mosquitoes may become resistant，”said the officer at last. 26.A.education              B.wealth                       C.health                       D.medicine 27.A.surprised                     B.excited                      C.doubtful                    D.happy 28.A.united                  B.developing                C.similar                      D.separate 29.A.other                    B.some                         C.the others                  D.the few 30.A.sleep                    B.live                           C.stand                         D.sit 31.A.cold                            B.hot                           C.bright                       D.warm 32.A.saves                    B.expresses                   C.means                       D.is 33.A.nearly                  B.mostly                      C.finally                       D.only 34.A.read                            B.learnt                        C.written                      D.studied 35.A.mentioned            B.remembered                     C.started                       D.continued 36.A.pictures                B.places                       C.maps                         D.bus-lines 37.A.store                    B.use                           C.share                         D.show 38.A.name                    B.sign                          C.number                            D.attention 39.A.tools                   B.clothes                      C.families                     D.guns 40.A.familiar                B.friendly                     C.strict                         D.popular 41.A.work                    B.run                           C.stop                          D.help 42.A.movement            B.program                    C.action                       D.equipment 43.A.why                            B.how                          C.what                         D.that 44.A.proved                 B.killed                        C.thought                            D.discussed 45.A.event                    B.matter                       C.fact                           D.case