干燥综合征患者的常见抗体为（）
A.C-ANCA
B.p-ANCA
C.抗核抗体
D.抗SS-A抗体
E.结核抗体
参考答案：D
若函数y=kx的图象过（2，-6）点，则k=（ ）。
Questions 37-40Complete the sentences below.Write NO MORE THAN THREE WORDS for each answer.
The biggest social event for horse racing is ______
