【名词&注释】
营养价值(nutritive value)、显微镜(microscope)、细胞核(cell nuclear)、借助于(by means)
[单选题]下列对于细菌和真菌的叙述中，正确的是( )
A. 它们都过着寄生或腐生的生活
B. 它们都很小，必须借助于(by means)显微镜才能看见
C. 细菌都危害人体健康，真菌营养价值高，可以食用
D. 细菌没有成形的细胞核，真菌具有真正的细胞核
查看答案&解析
举一反三：
[单选题]How long did he spend on his way to the place for his performance?
A. One hour. B． Two hours.
B. four hours and three quarters. D． One hour and a quarter.
[单选题]23． How many dangers will animals meet in the deep sea?
A. One
B. Two
C. Three
D. Four
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