“人间四月芳菲尽,山寺桃花始盛开。”体现的是哪种因素对生物生活的影响[ ]
A.阳光
B.湿度
C.温度
D.土壤
答案:C
关于x的方程(m-1)x|m|+1+2mx+1=0是一元二次方程,则m的值是( )
A.1
B.0
C.1或-1
D.-1
He knows it is high time that he ________ at once.
A.quits smoking
B.quitted smoking
C.should quit to smoke
D.quitted to smoke