单项选择题

How can a urine test show a patient may have a vitamin deficiency

A．A lot of vitamins are in the urine.
B．The body refuses to absorb vitamins.
C．Only a few vitamins passes through the body.
D．A lot of vitamins are taken in by the body.

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热门试题

单项选择题According to the passage ,Brazil has cut back its population growth ______.

A．by educating its citizens
B．by careful family planning
C．by developing TV programmes
D．by chance

单项选择题The phrase puts it down to (Line 1 ,Pars. 3)is closest in meaning to ______ .

A．attributes it to
B．finds it a reason for
C．sums it up as
D．compares it to