题目

In the global economy, a new drug for cancer, ______ it is discovered, will create many economic possibilities around the world. A . whatever B . whoever C . wherever D . whichever 答案：C3．已知抛物线的顶点在原点，对称轴为x轴，抛物线上的点M（-3，m）到焦点的距离等于5，求抛物线的方程和m的值，并写出抛物线的焦点坐标和准线方程．