Tmall is a platform for business people to __________.
A. find cheap products
B. look for friends
C. open private shops
D. advertise and sell international brands
查看答案
What is the real purpose of the marketers who use QQ?
A. To find potential customers.
B. To build discussion groups.
C. To tell users about the feedback on their products.
D. To ask questions and get answers.
原子核由质子和（ ）组成。
A. 中子
B. 电子
C. 夸克
原子核的结合能简称（ ）
A. 太阳能
B. 核能
C. 风能
下列哪项属于中国核电走向世界的“国家名片”？
A. 秦山核电站
B. 大亚湾核电站
C. 华龙一号
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