27.We’d be very grateful if you could join us because your cooperation will the timely completion of our project.
A.reach for B.make for C.go for D.stand for
26.As angry crowds got into the streets fighting for their basic rights, the local government
the police to keep order.
A.called in B.brought about C.picked out D.paid back
25.When you , use a handkerchief to cover your nose and mouth. This is particularly necessary in public places.
A.speak B.whisper C.sneeze D.breathe
24.Pictures on TV show the quake-hit capital to ruins and helpless survivors waiting eagerly for relief.
A.decreased B.destroyed C.returned D.reduced
23.Having worked as a doctor for so many years, Mr. White has rich experience in battling with various diseases.
A.accumulated B.reserved C.increased D.developed
22.A trip to the forest park is a wonderful of my happy childhood, when I had no end of fun with my playmates.
A.adventure B.celebration C.reminder D.attraction
第一节:单项填空(共10小题,每小题1分,满分10分)
从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
21.I must have been a great to my parents in those hard days, for I never failed to live up to their expectations.
A.achievement B.comfort C.disappointment D.support
34.(8分)
在全球变暖的大背景下,低碳经济受到越来越多国家的关注。下图示生态系统碳循环的部分过程,其中甲、乙、丙表示生态系统中的三种成分。试分析
(1)《联合国气候变化框架公约》将“从大气中清除二氧化碳的过程、活动和机制”称之为“碳汇”,图能表示“碳汇”的过程是 (用图中数字序号表示),这一过程主要发生在甲图中 处(在a~d中选择)。
(2)X与甲图细胞所示生物类群的能量来源不同,X代表的生物能量来源为 ,X的细胞结构的主要特点是 。
(3)生态系统中,乙的成分为 。能降低温室效应的成分是 ,理由是 。
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