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【简答题】
大量事实表明,声音是由物体的______而产生的.通常我们听到的声音是通过______传播的.
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【单选题】毛细血管的下列结构特点中,哪一项不与它的功能相适应(  )
A.
管壁薄,由一层上皮细胞构成
B.
通常位于最小动脉和最小静脉之间.
C.
管腔极小,仅能让红细胞单行通过
D.
管内血流速度极慢
【单选题】中国银联是支付机构,更是国内人民币支付卡的唯一交易( )组织,肩负支付领域的监管之责
A.
清算
B.
结算
C.
认证
D.
协调
【单选题】– Who is the woman over there? – She is Miss Fang. She is their English teacher. She teaches______English.
A.
their
B.
theirs
C.
them
D.
they
【单选题】人体的结构与功能是高度统一。下列有关叙述错误的是( ) A. 左心室壁最厚,心肌发达,可以将血液“泵”到全身各处 B. 肺泡壁和毛细血管壁都由一层上皮细胞构成,利于肺泡与血液进行气体交换 C. 在人体的动脉血管和静脉血管中都有瓣膜,保证血液不能倒流 D. 小肠内表面有许多环形皱襞和小肠绒毛,增加了消化和吸收的面积
A.
B.
C.
D.
D
【单选题】Jana is one of the best students in her class who __ by their teacher .
A.
is praised
B.
are praised
C.
praising
D.
praised
【简答题】中动脉的管壁结构与功能是什么?
【简答题】听对话,回答第1-2小题。 1. Who is Michael? A. Their best friend. B. Their head teacher. C. Their maths teacher. 2. Who will Betty do next Sunday? A. To go hiking with her friends. B. To visit her head teacher. ...
【多选题】How can American college students address their teacher who is a 40-year old woman named Maria Smith, and she is a PhD degree.
A.
Professor
B.
Teacher Smith
C.
Dr. Smith
D.
Maria
E.
Smith
【简答题】中动脉的管壁结构与功能
【单选题】[单选题] 中国银联是支付机构,更是国内人民币支付卡的唯一( ),肩负支付领域的监管之责。
A.
收单支付机构
B.
独立发行机构
C.
交易清算组织
D.
跨行支付组织
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