WASHINGTON — The U.S. trade deficit fell to a seven-month low in April as exports rose to a record high, lifted by an increase in shipments of industrial materials and soybeans.The Commerce Department said on Wednesday the trade gap dropped 2.1 percent to $46.2 billion, the smallest since September. Data for March was revised to show the trade deficit falling to $47.2 billion, instead of the previously reported $49.0 billion.The government also revised trade data going back to 2010.