【名词&注释】
组织活动(organization activity)、基本分生组织(ground meristem)、居间分生组织(intercalary meristem)、维管形成层(vascular cambium)、原形成层(procambium)
[单选题]原套、原体的细胞数目不会因为其具强烈分裂而无限增加。( )
A. 正确
B. 错误
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举一反三：
[单选题]小麦、玉米拔节是居间分生组织活动的结果。( )
A. 正确
B. 错误
[单选题]How did the calf feel about the mother elephant’s roaring?
A. It was a great comfort. B． It was a sign of danger.
B. It was a call for help. D． It was a musical note.
[单选题]__ unemployment and crime are high, it can be assumed that the latter is due to the former.
A. Before
B. Where
C. Unless
D. Until
[单选题]According to the passage, what will happen if we hold that science is getting beyond control?
A. The development of science will hopelessly slow down.
B. Businesses will have even greater influence on science.
C. The public will lose faith in bringing about a bright future.
D. People will work more actively to put science under control.
[单选题]髓射线起源于( )。
A. 基本分生组织
B. 原形成层(procambium)
C. 维管形成层
D. 原分生组织
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