皮皮学，免费搜题
登录
搜题
【单选题】
微量元素在人体内的含量( )。A.
0.1%～1%
B.
＜0.001%
C.
0.001%～0.1%
D.
＜0.01%
E.
＜1%
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】设半径r=2.5,编程计算相应圆的周长、圆的面积和圆球的体积。要求:用函数scanf输入数据,计算结果取小数点后2位。
【单选题】—Can I help you? —I’d like to buy a present for my father’s birthday, at a proper price,but of good use.
A.
that
B.
one
C.
it
D.
which
【单选题】The windows were ______ high up in the walls of the castle.
A.
Set
B.
fixed
C.
seated
D.
settled
【单选题】-Can I help you? -I’d like to buy a present for my father’s birthday, at a proper price but of great use.
A.
it
B.
everything
C.
that
D.
one
【单选题】According to this passage, the walls were very likely built by__________.
A.
the Han Dynasty
B.
the Mongol tribes
C.
the Western Xia Dynasty
D.
an unknown tribe
相关题目：