多项选择题

4、缺铁性贫血临床表现有：
A、头晕、乏力
B、活动后气促
C、注意力不集中
D、异食癖
E、匙状甲

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单项选择题

Which of the following statements is wrong?
A、One statement of a third-generation language can be compiled to 5 or 10 machine code instructions.
B、One statement of a fourth-generation language can be compiled to 30 or even 50 machine code instructions.
C、Third-generation language includes Java, C, SQL, and etc.
D、Fourth-generation language can be selected for implementing a database application.

单项选择题

选项col=4或col="blue"代表蓝色。（）

A．对
B．错