题干

2月2日是“世界湿地日”。中国将使50%的自然湿地和70%的重要湿地得到有效保护,并建立起结构较为合理、功能较为优化的湿地保护网络体系,逐步扭转湿地面积减少和功能退化的局面。下图的湿地体现了何种功能(  )

A:保持水源

B:净化水质

C:调节气候

D:美化环境,维护生物多样性

上一题 下一题 0.0难度 选择题 更新时间:2019-06-11 08:38:18

答案(点此获取答案解析)

B

同类题5

阅读短文,根据短文内容及首字母提示,在空白处填入一个适当的单词,必要时进行词形变化.

    One afternoon,I went into an art museum while waiting for my husband.I hoped to enjoy the works of art quietly.

    A young couple walked in front of me and talked ____the paintings between themselves all the time.The lady did almost all the talking,but the man kept listening to her.I thought the man was very patient ____nobody would like to be bothered (打扰) while enjoying the paintings.

    I met them several ____as I moved through the different rooms of the art museum.Each time I heard her talking,I moved ____quickly.

    I was ____for some gifts at the museum shop when the couple walked slowly to the exit (出口).Before they left,the man ____out a cane (拐杖).Then he tapped (轻敲) his way to the coatroom to ____the jacket for his wife.

    "He is a brave man,"the worker of the shop said."He decided not to change his life after his eyes got hurt.Though he is ____now,he never gives up.He and his wife come here whenever there is a new art show."

    "But what can he get out of the art?He can't see!"I asked.

    "You are wrong.He ____a lot,more than you and I do."The worker said,"His wife describes ____painting so he can see it in his mind."

    I fell silent.Then I realized that I learnt something about patience,courage and love that day.