【单选题】The two essential parts of a deal negotiation are ( ) .
A.
Enquiry and acceptance
B.
Offer and counter-offer
C.
Counter-offer and acceptance
【判断题】山水画创作的源泉来源于生活,来源于大自然,古今画家都重视写生,许多作品都是在写生的基础上创作的。
【单选题】________are two essential factors to form a contract.
B.
Offer and counter-offer
C.
Enquiry and acceptance
【判断题】A path that connects two essential nodes is essential branch.
【判断题】人类社会存在和发展的基础是物质资料的生产。
【简答题】人类社会存在和发展的基础是物质资料( )。
【多选题】What are the two essential components of scientific research?
【判断题】人类社会存在和发展的基础是物质资料的生产方式