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【单选题】
生物体的组成方式从简单到复杂的排列顺序是____。(出题单位:中国科普研究所)A.
细胞,组织,器官,器官系统
B.
器官系统,器官,组织,细胞
C.
组织,细胞,器官系统,器官
D.
组织,细胞,器官,器官系统
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【单选题】Rescue workers did not stop searching for survivors until______.
A.
late at night
B.
the evening
C.
the morning
D.
the afternoon
【简答题】诗中描写了哪些美好的事物( “好东西”)?它们的寓意是什么?
【单选题】It is the duty of medical workers to rescue the ______ and heal the ______.
A.
dad, wounded
B.
dead, wound
C.
dying, wounded
D.
dying, wound
【单选题】Rescue workers continued the delicate task of sifting through tons of concrete and ______ to try to reach possible survivors.
A.
scraps
B.
leftovers
C.
debris
D.
residues
【单选题】It was very difficult to rescue the drowning boy in the sea. One moment the rescue workers ____him but the next moment they _____. [ ]
A.
caught sight of; lost
B.
caught the sight of; lost his sight
C.
caught sight of; lost sight of him
D.
caught the sight of; lost their sight of him
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