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【多选题】
爬行动物与鸟类共同的特征为:A.
缺乏皮肤腺、髁、卵裂形式为盘裂、双循环
B.
皮肤干燥、具表皮角质层产物、髁、卵裂形式为盘裂
C.
缺乏皮肤腺、具表皮角质层产物、髁、卵裂形式为螺旋卵裂
D.
皮肤干燥、具表皮角质层产物、体温恒定、卵裂形式为盘裂
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【简答题】For years and years people have been saying that railways are dead. “We can do without railways,” people say—as if cars and planes have made railways unnecessary. We all keep hearing that trains are s...
【简答题】For years and years people have been saying that the railways are dead. “ We can do without railways.” People say…as if motorcars and planes have made the railways unnecessary. We all keep hearing tha...
【单选题】疏散分层形树冠，有中央领导干，可分三个层次，层与层之间主枝错落着生，夹角角度相同，层距要求（ ）。
A.
30~50 cm
B.
50~60 cm
C.
60~70 cm
D.
80~100 cm
【简答题】The company will carry out some programs on railways.
【单选题】小刚去买东西，人家多找了10块钱，他一直在犹豫要不要送回去，最后他想如果是别人的话，也应该不会 送回去的,这属于（ ）自我防御机制。
A.
投射
B.
转换
C.
压抑
D.
文饰
【简答题】The coming of the railways in the 1830s _____ our society and economic life. (A) transformed (B) transported (C) transferred (D) transmitted
【简答题】The International Union of Railways is abbreviated as（ ）．
【简答题】F59 — F68 (一)(二)(三)(四)(五)
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