问题
单项选择题
下列哪项不是结石的主要成分
A．草酸钙
B．磷酸钙
C．焦磷酸盐
D．尿酸
E．胱氨酸
答案
参考答案：C
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下列哪项不是结石的主要成分
A．草酸钙
B．磷酸钙
C．焦磷酸盐
D．尿酸
E．胱氨酸
参考答案：C
| 完形填空。 | |||
| Australia must be fun. I 1____________ in China with my mom and dad. I don't 2____________ a sister or brother. My mom is a singer. She 3____________ swimming. My dad is a TV reporter. He likes 4____________ to music. I like 5____________ the violin and writing emails.
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