2014年6月7日,月工资只有1000多元的小区保洁员王爱芹,独自面对别人丢失的45万元巨款,她选择毫不犹豫地归还失主。她说:“我也丢过钱,失主丢了这么多钱不知有多着急呢!”王爱芹的行为( )
①是设身处地为他人着想的表现 ②表明在某种情况下需要“善意的谎言”
③是将心比心、急人所难的表现 ④是懂得换位思考、与人为善的表现
A: ①②③
B:①②④
C:②③④
D:①③④
人体的内环境是指( )
已知B,C是两个定点,|BC|=6,且△ABC的周长等于16,求顶点A的轨迹方程.
W: Good morning, Jack!Can I help you?
M: Good morning! I'd like____noodles.
W: What kind of noodles would you like?
M: I'd like ____potato and cabbage noodles, please.
W: What size ____of noodles would you like?
M: I'd like a ____one.
W: OK. What other things do you want?
M: Oh, yes. I'd like ten mutton and carrot ____.
W: OK.
有关河流地貌对聚落分布影响的叙述,正确的是( )