男性,10岁。体检发现P79次/分,脉律不整,吸气时脉律增快,呼气时减慢。这是由于()
A.交替脉
B.奇脉
C.房颤
D.房早
E.窦性心律不齐
参考答案:E
动词填空, 用所给动词的适当形式完成下列短文。
John 1_____ (study) at the town's school now, He 2_____ (be) there since last year. He isn't interested
in studying. He 3_____ (prefer) to make friends and spend a lot of time outside. He also likes 4_____ (play)
computer games with his friends. So of course, when the exam 5_____ (take) last week, he didn't get a good
result and 6_____ (fail) again. He thought, "If my father knows all about it, he 7_____ (become) angry and
give me a good lesson," So he sent a note to his brother and asked his brother to get his father ready for the
bad news. The next morning, he received the following answer, "Father is ready. You'd better 8_____ (be)
ready for yourself."
有的人做事情往往急于求成,总是企图“立竿见影”。这样的做法违背了 [ ]
A.量变是质变的前提和必要准备
B.量变达到一定的程度必然会引起质变
C.量变比质变更重要
D.没有质变就没有发展