肺心病患者出现心室颤动、心脏骤停以致忽然死亡的最常见原因是()
A.急性广泛性心肌梗死
B.急性严重心肌缺氧
C.右心功能不全
D.左心功能不全
E.左心功能不全
参考答案:B
阅读短文,并回答问题。
Chen Jie is a Chinese girl. She is very kind. Today is Sunday. She is going to help her mother clean the
room in the morning. In the afternoon she is going to do her homework. Then she's going to have supper at
7 o'clock. She is going to the movie in the evening.
1. Is Chen Jie a Chinese girl?
___________________________________________________________
2. What day is it today?
3. What is she going to do on Sunday morning?
4. When is she going to do her homework?
5. What is she going to do after supper?
下图是课本中的一幅科学漫画,如果漫画中的“胖子”、“瘦子”和被提升货物的重力分别为G1、G2、G3那么它们的关系正确的是
A G1=G2=G3 B G1>G2=G3 C G1>G2>G3 D.G1>G3>G2