单项选择题
What is not true of Monster Year according to the legend? A. It was extremely ferocious. B. Year lived deep at the bottom of the sea all year round. C. Year climbed up the shore only on New Year’s Eve. D. Year only ate vegetables.
单项选择题 I’m just upset about the ____ Day. A、Christmas B、Thanksgiving C、Easter D、Valentine's
判断题 彩铅绘制蝴蝶兰时枝干和花苞的暗灰面有区分出来，用深红色和黑色加重暗面
单项选择题 对一阶逻辑公式的说法正确的是( )。
