能促进铁吸收的是
A. 维生素C
B. 四环素
C. 浓茶
D. 氢氧化铝凝胶
E. 牛奶或豆浆
5.以下所列影响铁剂吸收的因素，正确的是（）
A. 体内贮铁量
B. 饮食的种类
C. 服用时间与进餐时间
D. 胃和小肠环境的酸碱性
E. 铁剂中二价铁（Fe2+）的比例
News 1 Questions 1 and 2 will be based on the following news item.Q 1 ：What kind of investigation has the U.S. government launched?
A. Whether Baidu is dominating the promotion of its products.
B. Whether Yahoo is blocking other competitors.
C. Whether Google is dominating the promotion of its products.
D. Whether Bing is blocking other competitors.
Q 2：Where do Google’s earnings mainly come from?
A. Networks.
B. Advertisements.
Computers.
D. Business.
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