题干

下面是一个健康人的血浆、原尿、尿液的三个样品中主要物质质量分数比较表.请根据表中数据回答问题(数据单位是克/毫升)

(1)样品A是____,原因是____ .

(2)样品B是____,原因是____ .

(3)样品C是____ ,原因是____ .

(4)样品B中的葡萄糖是经过____ 作用出现的,样品A中的葡萄糖是经过____ 作用而没有的.

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答案(点此获取答案解析)

\u5c3f\u6db2,\u5c3f\u6db2\u4e2d\u6709\u65e0\u673a\u76d0\u3001\u5c3f\u7d20\uff0c\u6ca1\u6709\u8461\u8404\u7cd6\u548c\u86cb\u767d\u8d28,\u539f\u5c3f,\u539f\u5c3f\u4e2d\u6709\u8461\u8404\u7cd6\u3001\u65e0\u673a\u76d0\u548c\u5c3f\u7d20,\u8840\u6d46

同类题4

阅读理解

    What do you think of cats? Some people think very lovely. But not all people love cats. Compared with dogs, cats seem to be very lazy and unfriendly. Besides, cats are not known for acts of selflessness (无私). But maybe we're wrong about them. Don't believe it? Then meet Pippa, a very unusual cat.

    The black-and-white cat was left in a box outside a shop and taken by the British RSPCA to the Jansa family in Whitstable, Kent. They really loved her character (性格) and decided to adopt (收养) it,but they never guessed she'd become a lifesaver.

    Eight-year-old Mia Jansa had diabetes and had become good at testing her blood during the day, as well as having something to eat or drink to bring her blood sugar levels back. But the danger was at night. Mia could easily experience hypoglycemic (低血糖症的) situations when she was asleep, which could cause even death.

    Soon after she was adopted, Pippa went into Mia's bedroom in the middle of the night and woke her up. When the child tested her blood sugar levels, she found they were dangerously low. Ever since, Pippa always visits Mia at night. If she can't get her to wake up, she raises the alarm.

    “Pippa does this of her own accord,” says Mia's mother Laura. “We don't make a request for caring because we don't want to encourage wrong alarms. She gets plenty of hugs. It gives me peace of mind and I know someone else is keeping an eye on Mia.”

    Now the family is so happy that they've chosen to adopt it in the first place.