当k取何值时,方程2(2x-1)=1-2x的解不小于方程8-k=2(x+4)的解。
解:由2(2x-1)=1-2x,得
由8-k=2(x+4),得
所以,即k≥-1。
患者男,28岁,低热盗汗2年,近2个月双下肢肌无力,逐渐出现瘫痪,体检咽后壁有脓肿,诊断应考虑为()
A.颈椎结核
B.胸椎结核
C.腰椎结核
D.膝关节结核
E.髋关节结核
动词填空 用括号内所给动词的适当形式填空,并将答案写在答卷标有题号的横线上。(本大题共8小题,每小题1分,共8分)
小题1:Amy with her classmates ___________ (mop) the floor at this time yesterday.
小题2:What did you say ___________ (change) his mind just now?
小题3:Ang Lee ___________ (honour) with the Oscar Award for Best Director for his Life of Pi at the 85th Academy Awards Ceremony on February 24th, 2013.
小题4:The problem the leaders paid attention to ___________ (solve) next week.
小题5:— Did you see Tom at the party?
—No, Mary told me that he ___________ (leave) by the time I got there.
小题6:It was said Sam ___________ (get) better marks in the coming exams because he worked harder than before.
小题7:I ___________ (check) my e-mails. There’s nothing new.
小题8:The actor looks happy because the audience ___________ (clap) their hands warmly.