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【单选题】
中药肉苁蓉来源有肉苁蓉、官话肉苁蓉两种,其中肉苁蓉 断面 维管束 特征为A.
点状，淡棕色，排列成波状环纹
B.
点状，灰褐色，散生
C.
三角状，黄色， 排列 成波状环纹
D.
三角状，黄色， 散生
E.
点状， 黄色， 排列成环
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反馈参考答案：
举一反三
【单选题】The world economy has improved ____ since the end of last year, but major problems are not fully solved. [ ]
A.
somehow
B.
somewhat
C.
anyhow
D.
meanwhile
【单选题】Does the bar open every day?( )
A.
Y es
B.
Just on weekend
C.
Just on week days
D.
Except Wednesday
【多选题】Select the following true phrases regarding the tasks that have been solved by machine learning.选择下列哪些属于可以通过机器学习解决的任务。
A.
Classification 分类
B.
Clustering 聚类
C.
Category 派生
D.
Dissection 剖析
E.
Partition 划分
F.
Regression 回归
【单选题】The road ______and it will be finished by the end of next year.
A.
is built
B.
is being built
C.
has been built
D.
was built
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