问题
单项选择题
芒硝中主含
A．含水硫酸钙
B．含水硫酸钠
C．含水硅酸镁
D．碳酸锌
E．碳酸镁
答案
参考答案：B
解析：矿物药的主成分。类似的药材还有自然铜(二硫化铁)、赭石(三氧化二铁)、炉甘石(碳酸锌)、滑石(含水硅酸镁)、石膏(含水硫酸钙)。
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芒硝中主含
A．含水硫酸钙
B．含水硫酸钠
C．含水硅酸镁
D．碳酸锌
E．碳酸镁
参考答案：B
解析：矿物药的主成分。类似的药材还有自然铜(二硫化铁)、赭石(三氧化二铁)、炉甘石(碳酸锌)、滑石(含水硅酸镁)、石膏(含水硫酸钙)。
Mr. Green a small town. He can’t speak very . He stammers (口吃) a lot when he . One day he goes to a shop. He wants to buy a parrot(鹦鹉). He the shopkeeper(店主), “D-do-do you have a p-parrot?” “Yes, sir.” answers the shopkeeper. “ a nice green . It knows everything.” So Mr. Green buys and goes with his bird. But a few days, he it back to the shopkeeper. “This bird can’t t-t-talk. It can only st-t-ammer.”
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