SINGAPORE GDP TO GROW SIX PCT IN FIRST QUARTER Singapore's gross domestic product will grow six pct in the first quarter and five pct in the second quarter this year, with further growth expected in the second half, Trade and Industry Minister Lee Hsien Loong told parliament. The figures compared with 3.4 pct contraction and 1.2 pct growth respectively for the first and second quarters of 1986. The estimates were based on a tentative leading indicator incorporating new business orders, company inventories and share prices used by his ministry, Lee said, without giving further details of the new indicator. Singapore's economy grew 1.9 pct last year, after shrinking 1.8 pct in 1985. The government has forecast growth rate of three to four pct for 1987.