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【判断题】
2005年,联合国国际贸易法委员会在电子商务示范法电子签名示范法基础上制定了正式的国际法律文件《电子商务公约》。
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】已知sinα ,tanα>0,则角a的终边所在的象限为( )
A.
第一象限
B.
第二象限
C.
第三象限
D.
第四象限
【单选题】She did not stop blaming the boy until she suddenly _____ what she said might have hurt him.
A.
noticed
B.
recognized
C.
realized
D.
liked
【单选题】1 GRAMMAR A Choose the best answer. She did not stop _____ until it became dark.
A.
working
B.
to work
C.
worked
D.
for work
【简答题】I will never drive a car again. I had an car accident today. I was driving up Fouth Avenue. I saw a bright yellow car. It was driven by a little old lady. She obviously did not see the stop sign. I c...
【单选题】Mrs. Davis said she did not know what might alleviate her pain.
A.
cause
B.
stop
C.
ease
D.
prevent
【单选题】生物转化过程中最重要的作用是
A.
增强非营养性物质极性,利于排泄
B.
使药物失效
C.
使生物活性物质灭活
D.
使某些物质毒性增强
E.
使毒物的毒性降低
【单选题】已知 sin a >0, tan a <0, 那么是 a 所在的象限是 ( )
A.
B.
C.
D.
【单选题】已 知 sin A · tan A < 0 , 则角 A 所在的象限是
A.
第二象限
B.
第三象限
C.
第二或第三象限
D.
第四象限
【单选题】已知 sin a 0, 那么是 a 所在的象限是
A.
B.
C.
D.
【单选题】She did not stop _____ until it became dark.
A.
working
B.
to work
C.
worked
D.
for work
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