The Sensex at the Bombay Stock Exchange rallied 220 points, to 17,702 in opening trade, this morning, as Euro-zone debt worries eased, after Greece shelved plans for a financial bailout referendum, and after a surprise interest rate cut by the European Central Bank. Later, the Sensex pared its initial gains, to stand 93 points, or 0.5 percent in positive territory, at 17,575 in afternoon deals, a short while ago.Other Asian markets in Japan, China, Hong Kong, Indonesia, South Korea, Taiwan and Singapore were up by between 0.7 percent and 3.3 percent, today.Over in the US, the Dow Jones Industrial Average had gained 1.9 percent, overnight.