咖啡酸具有止血功效，存在于多种中药中，其结构简式如图：
，则下列有关说法正确的是( )
A．该物质中苯环上一氯代物有2种
B．1 mol该物质可以与1.5mol碳酸钠溶液反应生成1.5mol的CO2
C．既能发生取代反应，也能发生加成反应
D．所有碳原子不可能都在同一个平面上
C
题目分析：A、一氯代物有3种；B、苯酚的酸性弱于碳酸，所以酚羟基与碳酸钠溶液反应不能生成CO2，错；C、碳碳双键可以发生加成反应，苯环上可以发生取代反应，对；D、苯环上的6个碳原子在一个平面上，双键两端的碳原子也在同一个平面上，所以可能都在同一个平面上，错。
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| There are four kinds of satellites. The first kind of satellite studies the 1 of the earth. They are used to 2 maps. They also help countries to see where they may 3 oil or gold. The second kind guides ships and planes. A ship or plane can send 4 to the satellite, and the satellite can find out where it is. The third kind studies 5 . These satellites 6 clouds and strong winds moving across the earth. They warn countries when very 7 weather is coming. They take photos of the earth from thousands of kilometers above it and 8 the photos to a weather station on the ground. The fourth kind is used for communication. Telephone calls 9 countries can be sent by these satellites. Some can carry hundreds of calls at one time. The calls are sent to the satellite,then the satellite sends them to a station in the country Which is being phoned. These satellites 10 carry television pictures. They can receive and send about eight programs at a time. How amazing! | ||||
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