新生儿发现双侧大腿皮纹不对称，疑为髋关节脱位，应首先考虑拍X线骨盆平片来确诊。
参考答案：错
填词完成句子，首字母已给出。
1. L_____ Sunday I went to visit my uncle.
2. Li Ping is studying for the math t_____.
3. The math problem is a l_____ difficult. I can't work it out.
4. The teacher told me to s_____ at school, because I talked in class.
5. He is thirteen. He is a m_____ school student.
强心苷引起心脏毒性的原理是（）
A.抑制心肌细胞膜Na+-K+-ATP酶
B.兴奋心肌细胞膜Na+-K+-ATP酶
C.增加心肌细胞内K+
D.增加心肌细胞内Ca2+
E.增加心肌抑制因子的形成和释放
