题目

右图所示的微观变化，其基本反应类型是 A．化合反应       B. 置换反应 C．分解反应       D．复分解反应  答案：答案：BFifteen years spent in the field of education has provided me with many treasured moments．One of the most unforgettable _1_ when I was teaching _2_ grade 10 years ago． In May I decided to plan something _3_ for the children; a Mother’s Day tea．We had put our heads together to _4_ ideas of how to _5_ our mothers．We practiced singing songs, memorized poems and wrote cards．We decided to hold our tea the Friday before Mother’s Day．I was surprised but very _6_ to learn that every mother was planning to attend．I _7_ invited my own mother． Finally, the big day arrived．Each child _8_ up at our classroom door, expecting the arrival of his or her mom．_9_ it got closer to starting time, I looked around and my eyes quickly found Jimmy．His mother hadn’t shown up and he was looking _10_． I took my mother by the hand and walked over to Jimmy．“Jimmy,” I said, “I have a bit of problem here and I was _11_ if you could keep my mother _12_ while I’m busy．” My mom and Jimmy sat at a table．Jimmy _13_ my mom her treats, presented her with the gift I had made, just as we had _14_ the day before．Whenever I looked over, my mother and Jimmy were in deep _15_． Now 10 years later, I work with students of all ages, educating them about the environment．Last year, I took a senior class on a field trip, and there was Jimmy．I had the students complete an outline of the day’s _16_ and an evaluation of our trip．Then I collected the students’ booklets and checked them to see if _17_ was completed．When I came _18_ Jimmy’s page, he had written “Remember our Mother’s Day tea we had in second grade, Mrs. Marra? I do! Thanks for all you did for me, and thank your mother, too．” I told him I really enjoyed what he had written．He looked rather embarrassed and __19_ his own thanks and walked away．Suddenly he ran back and gave me a big hug． I ended my workday with a hug from a teenage boy who had _20_ stopped hugging teachers years ago． 1．A．lasted                    B．happened             C．experienced         D．described 2．A．third                     B．first                    C．second                D．fourth 3．A．special                  B．simple                 C．difficult               D．challenging 4．A．pay attention to      B．look forward to    C．get on with          D．come up with 5．A．love                      B．please                  C．respect                D．admire 6．A．astonished             B．worried               C．delighted             D．interested 7．A．even                     B．ever                    C．still                     D．once 8．A．followed               B．held                    C．kept                    D．lined 9．A．As                        B．Although             C．While                  D．Because 10．A．puzzled               B．curious                C．strange                D．upset 11．A．considering          B．wondering           C．asking                 D．doubting 12．A．connection          B．care                    C．company             D．concern 13．A．served                 B．supplied               C．appealed              D．applied 14．A．taught                 B．studied                C．practiced             D．told 15．A．mind                   B．thought               C．agreement           D．conversation 16．A．feeling                 B．behavior              C．event                  D．action 17．A．something           B．everything           C．anything              D．nothing 18．A．by                      B．to                       C．across                 D．over 19．A．announced           B．delivered              C．stated                  D．whispered 20．A．probably              B．exactly                C．rarely                  D．eagerly