问题
选择题
下列有关化学反应类型的判断；错误的是[ ]
A．SO3+H2O==H2SO4 化合反应
B．NH4HCO3
NH3↑+H2O+CO2↑ 分解反应
C．2Al+WO3
Al2O3+W 置换反应
D．6CO2+6H2O
C6H12O6+6O2 复分解反应
答案
答案：D
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下列有关化学反应类型的判断；错误的是[ ]
A．SO3+H2O==H2SO4 化合反应
B．NH4HCO3NH3↑+H2O+CO2↑ 分解反应
C．2Al+WO3Al2O3+W 置换反应
D．6CO2+6H2OC6H12O6+6O2 复分解反应
答案：D
Nancy had just got a secretary’s job in a big company to work in the sales department. Monday was the first day that she went to work, so she was very 35 . She got up very early and arrived at the office at twenty to eight. She 36 the door open and found nobody there. “I am the first to arrive.” She thought and came to her desk 37 she was surprised to find a large bunch of flowers on it. They were 38 . She picked up the flowers from the desk and smelled them. “Oh, how lovely!” Nancy cried joyfully. She then 39 for a vase to put them in. “Somebody has sent me flowers the 40 first day!” She thought happily. “But who could it be?” She began to wonder. The day passed very 41 and Nancy did everything 42 great interest and enthusiasm. For the following days of the week, the first thing Nancy did was to change water for the flowers. And then she __ 43 herself in her work. Then came another Monday. When she came near her desk, she was overjoyed to see a new bunch of flowers there. She quickly put them in the vase, replacing the old ones. The same thing happened again the next Monday. Nancy felt it strange and this time she began to think of ways to find out the 44 . On Tuesday afternoon, she was sent to 45 a plan to the general manager's office. She had to stay for a while at his secretary's desk 46 his directives. She happened to see on the desk a big notebook 47 with “Records of managers' meetings”, and 48 the half-opened pages. Suddenly her eyes fell on these words, “In order to keep the secretaries in high spirits, the company 49 that every Monday morning a bunch of fresh flowers should be sent to each secretary's desk.” Later, she was told that their general manager was a wise man with the Bachelor of Psychology in Business.
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