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【判断题】
中枢免疫器官是免疫细胞发生、分化、成熟的场所。A.
正确
B.
错误
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举一反三
【简答题】When I grow up... When John Lenon was five years old, his mother told him that happiness is the key to life. When he went to school, they asked him what he wanted to be when he grew up. He wrote down ...
【单选题】以下描述中，哪条不属于雀类的飞行特点（）
A.
当飞到一定高度后，用力扇动几下翅膀，就可以利用上升的气流展翅滑翔
B.
动作快而急促，常伴有短暂的停顿，琐碎而不稳定
C.
飞行速度快，翅膀扇动的频率较高，往往不容易看清翅膀的动作过程
D.
由于体小身轻，飞行过程中不是展翅滑翔，常常是夹翅飞窜
【多选题】管道运输的优点
A.
运输量大
B.
能耗少，运费低
C.
占地少，受地形、地貌影响小，运输距离短
D.
易于实现全面自动化管理
E.
安全密闭，受环境条件影响小
F.
不产生废渣废液，环境保性能好
【单选题】听力原文：W: Will John be coming to class this afternoon? M: He's supposed to. But actually he cannot come out from the hospital until next week as the doctor has said. Q: Where is John now? (13)
A.
At class.
B.
Back at home.
C.
At work.
D.
In hospital.
【简答题】管道运输的优点？
【多选题】管道运输的优点包括
A.
运量大
B.
永久性占用土地少，易选取捷径缩短运输距离
C.
可长期稳定运行
D.
损耗少，安全可靠
E.
耗能低、运输费用低
F.
沿途无噪声，漏失污染少
【单选题】Of the three boys, John sang _______in the class. He wants to be a singer in the future.
A.
more beautiful
B.
more beautifully
C.
the most beautifully
D.
the most beautiful
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