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Ａ 组 选择题(在每小题给出的四个选项中,只有一项是符合题目要求的,请将正确选项的代号填在题后的括号内)1 曲线Ｃ的参数方程为ｘ=ｔ2+2ｔ+3ｙ=ｔ2+4ｔ+5(ｔ∈Ｒ),则曲线Ｃ的图象在( )(Ａ)第一象限. (Ｂ)第二象限.(Ｃ)第一、二象限.(Ｄ)第三、四象限.2 直线ｌ:?
Group A multiple-choice questions (only one of the four options given in each question is to meet the requirements of the title, please fill in the parentheses after the question with the code of the correct option) 1 The parameter equation of curve C is x=t2 +2t+3y=t2+4t+5(t∈R), the image of curve C is in the first quadrant of ()(A). (B) the second quadrant. (C) the first and second quadrants. (D ) Third and fourth quadrants. 2 Line l:?