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【简答题】
请就给定资料3、5所反映的具体问题提出自己的解决方案。要求：1．结合实际，具有可操作性；2．条理清楚；3．字数不超过300字。
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】I know him very well. He’s sure to _____ his promise
A.
carry on
B.
carry through
C.
carry out
D.
carry off
【单选题】I know him very well because we ____________friends for ages.
A.
are
B.
were
C.
had been
D.
have been
【单选题】— This returned scientist has become one of the top experts in his field. — Yes, I know him very well. He once _____ in South America with wild animals for eight years. [ ]
A.
has worked
B.
worked
C.
had worked
D.
has been working
【单选题】关于球旁细胞描述错误的是
A.
位于入球微动脉管壁的平滑肌转化而成
B.
位于出球微动脉管壁的平滑肌转化而成
C.
球旁细胞内含有分泌颗粒（内含肾素）
D.
肾素是一种蛋白水解酶
E.
球旁细胞呈上皮样，立方形
【简答题】径向滑动轴承有__、__两种结构形式。
【单选题】I know him very well, because we _______ friends for ages.
A.
have made
B.
made
C.
have been
D.
are
【单选题】I know him very well because we ______ friends for ages.
A.
are
B.
we’re
C.
has been
D.
have been
【单选题】This returned Chinese scholar has become one of the top experts in this field .—Yes , I know him very well . He in Africa with wild animals for eight years .
A.
worked
B.
has been working
C.
has worked
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