Her uncle ___ to New York now, he ___ there twice. He'll be back tomorrow.
A：has gone, has been
B：has been, has been
C：has gone, has gone
D：has been, has gone
现在一个正常中学生的体重最接近（ ）
下列句子中，划线的成语使用不恰当的一句是（ ）
有关下列实验内容的叙述，正确的是（ ）
