影响钙吸收的主要因素是（）
A. 机体对钙的需要量大
B. 膳食蛋白质增加
C. 膳食草酸、植物酸多
D. 膳食中乳糖量多
The passage implies that ______.
A. few people attended the funeral.
B. fishing is a secure vocation.
C. the island is densely populated.
D. the house belonged to the decease
软件测试的主要步骤有______。 Ⅰ．单元测试 Ⅱ．集成测试 Ⅲ．确认测试
A. Ⅰ、Ⅱ
B. Ⅰ、Ⅲ
C. Ⅱ、Ⅲ
D. Ⅰ、Ⅱ、Ⅲ
______ is a major city in the sooth - east of New York state and comprises five boroughs, one of which is Manhattan, the economic and cultural heart of the city.
A. New York
B. Los Angeles
C. Seattle
Dallas
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