①原核细胞 ②坚硬的细胞壁成分为肽聚糖 ③真核生物 ④裂殖生殖 ⑤具纤维素的坚硬细胞壁.
A:①②④
B:②③④
C:③④⑤
D:①②
He gives the food me. That's very kind him.
在△ABC中,∠A=75°,∠B=55°,则下列关于∠C的说法正确的是( )