较常见的肱骨髁上骨折为
A．屈曲型
B．内收型
C．外展型
D．伸直型
E．分离型
参考答案：D
解析：[解题思路] 伸直型肱骨髁上骨折较常见，以儿童多发。
根据图片提示完成下面的语段。
Hello, I'm Amy. This is my ____________ . It's heavy. There are seven ____________s , eight ____________s , nine ____________s and a ____________
in it. It's beautiful. I like it very much.
元素类型为double的2行5列的二维数组共占用（）字节的存储空间。
. It's heavy. There are seven ____________s 
, eight ____________s 
, nine ____________s 
and a ____________ 