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【单选题】
The old man returning home after eight years absence to find that all the neighbors he had known were no longer there. Is this a complete sentence?

Yes
No
【单选题】
15.The book was so interesting that he had read it for three hours ______ he realized it.

when
until
after
before
【多选题】
15.西方美的起源学说有?

摹仿说
游戏说
巫术说
劳动说
无意识心理说
符号说
【单选题】
I have an appointment_________ 15 minutes.

on
at
for
in
【多选题】
15.乳剂粒径测定方法有

显微镜测定法
库尔特计数测定法
激光散射光谱法
透射电镜法
沉降法
【多选题】
下列会计档案应保管15年( )

总账
会计移交清册
原始凭证
银行余额调节表
年度会计报表
【单选题】
After the war, a character called Uncle Sam began appearing in political cartoon, his from ____ from an earlier cartoon character called Brother Jonathan.

involving
changing
evolving
altering
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/8592F581846CA714AADA89A876F80905.png title=15.png alt=15.png/>

<img src=https://huaweicloudobs.ahjxjy.cn/185FCE69420E9A3266F53A853ACD5EFC.png title=15-1.png alt=15-1.png/>
<img src=https://huaweicloudobs.ahjxjy.cn/C21C8472C669C4FEE1D21D21F5D1555A.png title=15-2.png alt=15-2.png/>
<img src=https://huaweicloudobs.ahjxjy.cn/95E60807FFFDEBD25E95B80F41B7FD9E.png title=15-3.png alt=15-3.png/>
<img src=https://huaweicloudobs.ahjxjy.cn/F39F1CAD0D156408D65F9EFBF74E514E.png title=15-4.png alt=15-4.png/>
【单选题】
15.Man _____ die without air or water.

will
have to
must
should
【单选题】
15.心脏的大体解剖结构是

A.心腔分为右心房、左心房及右心室、左心室。心壁分为心外膜、,心肌和心心膜
B.心传导结构包括窦房结、房室结、房室束:房室束左右脚及其末端形成的浦肯野氏 纤维
C.全身静脉血经由右心房、右心室、肺动脉(含静脉血)流人肺,交换气体后,通过 肺静脉(含动脉血)流人左心房、左心室,再通过主动脉流往全身各组织器官.
D.心脏的营养血管是冠状动脉、心大中小静脉
E.以上都是