预激综合征易发生何种心律失常()
A.窦性心动过速
B.室上性心动过速
C.室性心动过速
D.房室分离
E.房颤
参考答案:B
读句子,将它们排列成一段对话,并把序号写在题前括号里。
( ) What about the lions?
( ) They are sleeping.
( ) Where are the monkeys?
( ) Look at the monkeys!
( ) What are the monkeys doing?
( ) They are under the big tree.
( ) The lions are fighting.
考古资料的形成过程中只受到自然力作用的破坏。