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【单选题】
关于真体腔以下说法错误的是A.
真体腔形成的方式包括端细胞法和肠腔法。
B.
具有真体腔的动物，体腔完全由来自中胚层的细胞包裹。
C.
真体腔出现的前提是动物具有中胚层
D.
具有中胚层的动物体腔动物
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举一反三
【单选题】spontaneous
A.
In a friendly way, good-humouredly
B.
Cut into a special shape
C.
Acting immediately from natural feelings
D.
A feeling of respect and approval for a person
【简答题】Use half - reaction potentials to predict whether the following reactions are spontaneous or nonspontaneous in aqueous solutions. If the reaction is spontaneous, write a balanced equation and calculat...
【单选题】According to paragraph 3,proponents of spontaneous generation believed that which of the following was important for the process to succeed ?
A.
A sealed container
B.
Fresh air
C.
Heat
D.
The presence of nutrients
【简答题】______________ [A] incredible [B] spontaneous [C]inevitable [D] gradual
【简答题】spontaneous
【多选题】一汽车标采用阿拉伯数字“1”和汉字“汽”艺术组合,以下说法正确的是?
A.
构成一只展翅高飞的雄鹰
B.
象征不断进取，展翅高飞的一汽精神
C.
表达中国汽车工业走出国门、走向世界的决心
D.
表示第一汽车，第一企业
【单选题】The meaning of the underlined words in 'the details of spontaneous family relationships' can be expressed as ______.
A.
natural family relationships
B.
quickly occurring family relationships
C.
animals acting like a natural family
D.
animal family behavior. that cannot be preplanned or controlled
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