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【多选题】
检索题。在ScienceDirect数据库中检索论文：《catalysis today》，Volume 280, Pages 21–28，下列说法正确的是A.
论文的题目为：Innovative W-doped titanium dioxide anchored on clay for photocatalytic removal of atrazine
B.
共有4位作者
C.
第一作者的单位是：Environmental Engineering and Science Program, Department of Biomedical, Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221-0012, USA
D.
有45篇参考文献
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参考解析：
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【单选题】铁路客货运输票据是国家批准的专业发票,属有价证券,是铁路运输企业核算运输收入的( ),铁路客货运输票据的各联任何单位不得增减。
A.
原始凭证
B.
基本凭证
C.
重要依据
D.
运输票据
【单选题】When did the whole family feel in realtrouble?the storm was overwhelming.the French doors blew in with an explosive sound.the front door was pushed open by a blast of water.
A.
When
B.
When
C.
When
D.
When the water tasted salty.
【单选题】The whole family in the living room for a family photo.
A.
accumulated
B.
assembled
C.
collected
D.
aggreating
【单选题】When did the whole family feel in real trouble?
A.
When the storm was overwhelming.
B.
When the French doors blew in with an explosive sound.
C.
When the front door was pushed open by a blast of water.
D.
When the water tasted salt.
【单选题】When did the whole family feel in real trouble?
A.
When the storm was overwhelming .
B.
When the French doors blew in with an explosive sound .
C.
When the front door was pushed open by a blast of water .
D.
When the water tasted salt y.
【判断题】The falling of the main character symbolizes the falling of the whole family in James Joyce's writing.
A.
正确
B.
错误
【单选题】Our medical insurance provides protection ______ the whole family in the event of illness.
A.
against
B.
from
C.
for
D.
with
相关题目：
【单选题】铁路客货运输票据是国家批准的专业发票,属有价证券,是铁路运输企业核算运输收入的( ),铁路客货运输票据的各联任何单位不得增减。
A.
原始凭证
B.
基本凭证
C.
重要依据
D.
运输票据