已知过两点A（﹣1，1），B（4，a）的直线斜率为1，那么a的值是（　　）

直线y=kx+3与y=﹣x+3的图象如图所示，则方程组 $\left\{\begin{array}{c}y=kx+3\\ y=-x+3\end{array}\right.$的解为____ ．

                                                                                                    夏日南亭怀辛大
                                                                                                            孟浩然
                                                                                           山光忽西落，池月渐东上。
                                                                                           散发乘夕凉，开轩卧闲敞。
                                                                                           荷风送香气，竹露滴清响。
                                                                                           欲取鸣琴弹，恨无知音赏。
                                                                                           感此怀故人，中宵劳梦想。                                                        

下列关于分子的说法正确的是（　　）

写出下列词语的近义词。

好像——____       忽然——____      景象——____