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【判断题】
价格围绕价值波动是对价值规律的否定A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Please______the safety seal has not been broken before using this product.
A.
make
B.
agree
C.
ensure
D.
investigate
【单选题】Before using the machine, you must ____ carefully to these instructions.
A.
join
B.
join in
C.
take part in
D.
attend
【简答题】北京地铁车辆编号100861表示的含义为:10表示(),086表示,1表示()。
【简答题】居家隔离观察对象主要是哪些人?居家隔离观察时间是多久?
【单选题】Before using penicillin, _________.
A.
The doctor should make a careful inquiry about sensitivity
B.
T he patient should be given a skin test
C.
B oth a. and b..
【单选题】Before using your new pressure cooker, read the following______ carefully.
A.
publications
B.
instructions
C.
announcement
D.
advertisement
【单选题】Before using the machine, you should read the ______carefully. [ ]
A.
instrument
B.
instruction
C.
ingredient
D.
introduction
【单选题】Tourists have learnt to make investigations about tour operators before using them.
A.
YES
B.
NO
C.
NOT GIVEN
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