人体中化学元素含量的多少直接影响健康，缺乏下列哪种元素易导致

【名词&注释】

过去时(past tense)、直接影响(directly affect)、助动词(auxiliary verb)、第三次(the third time)、贫血症(anemia)、化学元素含量(element contents)、邮箱地址(mailbox addresses)

[单选题]人体中化学元素含量^{(element contents)}的多少直接影响健康，缺乏下列哪种元素易导致贫血症

A. 钙
B. 碘
C. 锌
D. 铁

查看答案&解析查看所有试题

学习资料：

[单选题]23． —Jimmy lost his key yesterday．—_________? It-s his third time in just one month．

A. Has he
B. Did he
C. Was he
D. Does he

[单选题]10． —What’ s your_________?—It's cindyjones@163．com．

A. e-mail address
B. telephone number
C. favourite day
D. home address

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