Dear Manager, After a serious consideration, I have definitely decided to resign from the department effectively on September 28th. I think you will readily understand my decision in view of my personal financial problems. I feel that great opportunities would be available to me to cope with these problems in some other companies. The two years working with you and my colleagues have been very pleasant and have provided a great challenge. I enjoyed working with you, and I regret very much the necessity of leaving me department only because of my extreme economic pressure. Before my leaving, I will certainly help in training the person you select to fill my position. If at any future time a problem should arise, I shall be happy to assist in any way I can. Yours sincerely, xxxA—mouse D—data processingB—central processing unit E—desktop operating systemC—CAD F—dialogue boxesG—disk drive L—home pageH—download M—host computerI—drag and drop N—ink-jet printerJ—electronic commerce O—laser jet printerK—floppy disk P—office automationExamples：(I)拖放 (H)下载A—mouse D—data processingB—central processing unit E—desktop operating systemC—CAD F—dialogue boxesG—disk drive L—home pageH—download M—host computerI—drag and drop N—ink-jet printerJ—electronic commerce O—laser jet printerK—floppy disk P—office automationExamples：(I)拖放 (H)下载A—mouse D—data processingB—central processing unit E—desktop operating systemC—CAD F—dialogue boxesG—disk drive L—home pageH—download M—host computerI—drag and drop N—ink-jet printerJ—electronic commerce O—laser jet printerK—floppy disk P—office automationExamples：(I)拖放 (H)下载A—mouse D—data processingB—central processing unit E—desktop operating systemC—CAD F—dialogue boxesG—disk drive L—home pageH—download M—host computerI—drag and drop N—ink-jet printerJ—electronic commerce O—laser jet printerK—floppy disk P—office automationExamples：(I)拖放 (H)下载A—mouse D—data processingB—central processing unit E—desktop operating systemC—CAD F—dialogue boxesG—disk drive L—home pageH—download M—host computerI—drag and drop N—ink-jet printerJ—electronic commerce O—laser jet printerK—floppy disk P—office automationExamples：(I)拖放 (H)下载Environment is everything that surrounds us: plants, animals, buildings, country, air, water—in fact everything that can affect us in any way. And environment differs in different parts of the world. Ecology is the science of how living creatures and plants exist together and depend on each other on the local environment. Where an environment is undisturbed, the ecology of an area is in balance. But if a creature dies out or an alien(相异的) species is introduced, then the ecology of this area will be upset. Man is a part of the environment and has done more to upset the ecology during his short span on earth than any other living creature. He has poisoned the atmosphere and polluted both land and water. He has wasted the earth’s natural resources with no thought for the future. He has killed a lot of precious animals for his delicacies (精美的食品)on the table and for his elegant overcoats. Since man has done so much damage, it is up to man to try to put matters right. And the sooner he does something about it, the better. 1)【R1】______ is everything that surrounds us. 2)【R2】______ is the science of how living creatures and plants exist together. 3) The ecology of an area is【R3】______ , where an environment is undisturbed. 4) Man is【R4】______ of the environment. 5) Man has poisoned the atmosphere and【R5】______ both land and water.Environment is everything that surrounds us: plants, animals, buildings, country, air, water—in fact everything that can affect us in any way. And environment differs in different parts of the world. Ecology is the science of how living creatures and plants exist together and depend on each other on the local environment. Where an environment is undisturbed, the ecology of an area is in balance. But if a creature dies out or an alien(相异的) species is introduced, then the ecology of this area will be upset. Man is a part of the environment and has done more to upset the ecology during his short span on earth than any other living creature. He has poisoned the atmosphere and polluted both land and water. He has wasted the earth’s natural resources with no thought for the future. He has killed a lot of precious animals for his delicacies (精美的食品)on the table and for his elegant overcoats. Since man has done so much damage, it is up to man to try to put matters right. And the sooner he does something about it, the better. 1)【R1】______ is everything that surrounds us. 2)【R2】______ is the science of how living creatures and plants exist together. 3) The ecology of an area is【R3】______ , where an environment is undisturbed. 4) Man is【R4】______ of the environment. 5) Man has poisoned the atmosphere and【R5】______ both land and water.Environment is everything that surrounds us: plants, animals, buildings, country, air, water—in fact everything that can affect us in any way. And environment differs in different parts of the world. Ecology is the science of how living creatures and plants exist together and depend on each other on the local environment. Where an environment is undisturbed, the ecology of an area is in balance. But if a creature dies out or an alien(相异的) species is introduced, then the ecology of this area will be upset. Man is a part of the environment and has done more to upset the ecology during his short span on earth than any other living creature. He has poisoned the atmosphere and polluted both land and water. He has wasted the earth’s natural resources with no thought for the future. He has killed a lot of precious animals for his delicacies (精美的食品)on the table and for his elegant overcoats. Since man has done so much damage, it is up to man to try to put matters right. And the sooner he does something about it, the better. 1)【R1】______ is everything that surrounds us. 2)【R2】______ is the science of how living creatures and plants exist together. 3) The ecology of an area is【R3】______ , where an environment is undisturbed. 4) Man is【R4】______ of the environment. 5) Man has poisoned the atmosphere and【R5】______ both land and water.
When will he stop working in the department ______.