学科间综合题如图1-2所示，它是证实植物进行光合作用的实验装_爱下问搜题

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问题问答题

学科间综合题

如图1-2所示，它是证实植物进行光合作用的实验装置，取一个烧杯装入大半烧杯水，烧杯内放一些金鱼澡，通入气体A，然后将盛满水的试管倒置在漏斗上，过一会儿有许多气泡产生，管内液面下降，根据这一实验，回答下列问题：

（1）写出实验室制取气体A的化学方程式______．

（2）通入气体A的目标是______．

（3）当试管内的液面处于图示位置时，则试管内的气体压强______外界是大气压强（填“大于”、“小于”或“等于”）

（4）试管内的气体可用______检验．

答案

结合生物光合作用及呼吸作用的知识不难判断物质A应为CO₂．

（1）实验室用稀盐酸和石灰石制取二氧化碳，反应方程式符合盐和酸的反应类型；

（2）绿色植物光合作用的原料之一是二氧化碳，所以通入气体A的目标是提供金鱼藻光合作用的原料；

（3）试管内的液面高于外界液面，所以说明试管内的气压小于外界大气压；

（4）由于金鱼藻光合作用的产生的气体是氧气，所以氧气的鉴别可以用带火星的木条进行检验．

故答案为：

（1）CaCO₃+2HCl=CaCl₂+CO₂↑+H₂O，

（2）提供金鱼藻光合作用的原料，

（3）小于，

（4）带火星的木条．

完形填空

He lost his arms in an accident that caused the death of his father. Then his 36 became his shadow, never leaving him alone for years. 37 writing with his toes, he was completely unable to do anything in his life.
As the two brothers grew up together, they had their 38 of problems and they would often quarrel. Then one day, his younger brother decided to 39 separate from him, living his own life as many 40 people do. So he was heart-broken and didn’t know what to do.
A 41 misfortune happened to a girl, too. One night she tried to 42 meals for her sick mother, only to overturn the kerosene light on the stove, resulting in a fire which took her 43 away.
Though her elder sister in another city 44 her willingness to take care of her, she was 45 to learn to be completely independent. At school, she 46 studied hard.
One day, the boy and the girl were both invited to 47 on a television interview program and asked to 48 something on a piece of paper with their toes. The boy wrote:My younger brother’s arms are my arms; 49 the girl wrote: Broken wings, flying heart.
They had both 50 the same pain, but their different attitudes determined the nature of their lives. It is true that life is unpredictable（难以预料）. Disasters can strike at 51 time. If you choose only to complain and 52 , it will always follow you 53 you go. But if you decide to be 54 , the hard moment will 55 to be one when new hopes will arise.

A．older sister

C．younger brother

D．In spite of

D．disappointed

B．bring about

判断题

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