A MILD earthquake shook the high desert near Death Valley shortly before midnight Saturday. No injuries or damage were reported. . . . AN EARTHQUAKE that measured 4.0 on the Richter scale shook parts of Colorado Sunday. There were no casualties and no reports of damage. . . . ISRAELI troops shot and wounded an Arab as he tried to cross from Egypt into the Palestinian-ruled Gaza Strip Sunday. . . . PAKISTAN Sunday ordered an Indian diplomat expelled in a new spying dispute between the two old foes.