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【单选题】
生长因子是细胞内的（ ）。A.
酶
B.
结构物质
C.
能源物质
D.
信号分子
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举一反三
【单选题】In the last sentence of the second paragraph, 'this matter' refers to ______.
A.
the fact that a scientist's religious views derive from his whole out look on life
B.
the fact that some people believe in God while others do not
C.
the disparity of thinking between scientists and people from other walks of life
D.
the disparity in the religious conclusions drawn from the observation of natural phenomena
【简答题】A．They can not find a good math teacher. B．They can not pass the examination. C．They can not meet the requirements. D．They can not catch up with the lessons.
【简答题】A．The fact that by the 12th century paper reached Europe. B．The invention of moveable type in Asia. C．The arrival of the moveable type from Asia to Europe. D．The method of printing in large quan...
【简答题】A．They can tell people apart by how they behave. B．They can type each other. C．They can tell good people from bad ones. D．They can recognize human faces.
【简答题】A．They can buzz in to kill. B．They can hear the dry plants' cries. C．They can imitate the plants' crying. D．They can attack healthy plants in dry, hot weather.
【简答题】根据句意，补全单词。 1. I hope to pass the____exam. 2. They look____,but in fact they are difficult. 3. The exam is ,so let's all go for it ！ 4. For____,this is a verb 'to help out'. 5. I'm looking forward to__...
【简答题】Unit 1-3 The fact that their mearriages may be on the rocks.
【简答题】A．They can share it with others. B．They can buy things they want. C．They can save it. D．All-above mentioned.
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