[音频]
About 79 percent of people.
B. More than 43 percent of people.
C. More than 70 percent of people.
D. About 57 percent of people.
[音频]
A. It is almost equal to the number of emails sent every day.
B. It is far more than the number of texts sent every day.
C. It is far less than the number of emails sent every day.
D. It is far less than the number of texts sent every day.
[音频]
A. Supportive.
B. Negative.
C. Suspicious.
D. Neutral.
4月30日，甲以手机短信形式向乙发出购买一台笔记本电脑的要约，乙于当日回短信同意要约。但由于“五一”期间短信系统繁忙，甲于5月3日才收到乙的短信，并因个人原因于5月8日才阅读乙的短信，后于5月9日回复乙“短信收到”。根据合同法律制度的规定，甲、乙之间买卖合同的成立时间是（）。
A. 4.30
B. 5.3
C. 5.8
D. 5.9
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