China’s economy probably cooled further to grow 7 percent in the first three months of the year, a Reuters poll showed, which would be the weakest pace in six years and raise pressure on policymakers to do more to bolster growth. The deluge of data over the coming week, starting with inflation on Friday and culminating with gross domestic product (GDP) data on April 15, will almost certainly revive speculation about when and how China will next ease monetary policy.