对树木进行切刻，纵伤与横伤的深度应该达到______。
A. 表皮层
B. 真皮层
C. 韧皮部
D. 木质部
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The thief was arrested after ______.
A. Mrs. Clarke described about him to the police
B. the police found his finger-prints on the wire
C. he went to a doctor about his burned hand
D. a doctor recognized him on the street
下列短截中，可以降低枝位、用于竞争枝处理的是______。
A. 轻短截
B. 中短截
C. 重短截
D. 极重短截
E. 回缩修剪
Why did Spring sell his false autographs in England and Canada
A. There was a greater demand there than in America.
B. There was less chance of being discovered there.
C. Britain was Spring's birthplace.
D. The prices were higher in England and Canada.
根据我国相关文件的规定，评标委员会专家，应当从事相关领域工作满( )年并具有高级职称或者具有同等专业水平，由招标人从国家发展和改革部门、其他相关行政主管部门或者招标代理机构、甲级工程咨询单位专家库内相关专业的专家名单中确定，一般采取随机抽取方式确定。
A. 4
B. 6
C. 8
D. 10
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