When the author says the creative mind and the critical mind "cannot work in parallel" (Line 3 Para.1) in the writing process, he means ______.
A. no one can be both creative and critical
B. they cannot be regarded as equally important
C. they are in constant conflict with each other
D. one cannot use them at the same time
婴幼儿肺炎最易出现的并发症是
A. 呼吸衰竭
B. 心力衰竭
C. 中毒性脑病
D. 脓气胸
E. 中毒性肠麻痹
正常婴儿的呼吸频率为
A. 60次/分～80次/分
B. 40次/分～50次/分
C. 30次/分～40次/分
D. 25次/分～30次/分
E. 18次/分～20次/分
Had you prepared for your lecture, you（）more fluently.
A. should have spoken
B. would have spoken
C. would speak
D. had spoken
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