Choosing from the following list of connective tissues, which one consists of cells in a fluid matrix?从下面的结缔组织列表中选择，哪一种是由流体基质中的细胞组成？
A. Loose connective tissue.
B. Adipose tissue.
C. Areolar tissue.
D. Bone.
E. Blood.
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Which statement is true about connective tissue:关于结缔组织的哪一种说法是正确的：
All connective tissue types are highly vascular.
B. All connective tissue types have some degree of vascularity.
C. Most connective tissue types are vascular.
D. Connective tissue is avascular.
E. Only dense connective tissue is vascular.
Connective Tissue is classified according to the three following groups:结缔组织按以下三组分类：
A. Connective tissue proper, dense connective and loose connective.
B. Specialised connective tissue, bone and blood.
C. Specialised connective tissue, connective tissue proper and loose connective tissue.
D. Connective tissue proper, fluid connective tissue and supporting connective tissue.
E. Blood, bone and cartilage.
The extra cellular matrix consists of:额外的细胞矩阵包括：
A. ground substance and water.
B. fibres and cells.
C. cells and interstitial fluid.
D. ground substance and fibres.
E. ground substance and tissue fluid.
使用jxgl数据库，查询选修了课程的学生选修的门数，显示学号、姓名、选课门数select sno,sname,COUNT(sno)______ from Students join SC on Students.sno=SC.snogroup by sno______
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