18.On Friday,world leaders will take historic action at the United Nations to try (61)to slow (slow) the effects of climate change and fix some of(62)its(it) damage.More than 60presidents and prime ministers,as well(63)as dozens of other top officials from more than 130countries will gather in New York to sign the climate change deal (64)reached(reach) in Paris in December.The agreement works to limit global temperature rise(65)to well below 2degrees Celsius.It also works(66)outa road map for reducing greenhouse gas emissions(排放物) and (67)controlling(control) the effects of a warming planet.While leaders hammered out the details in Paris,in New York on Friday they will sign and signal their readiness to start carrying out the agreement.U.N.Secretary-General Ban Ki-moon think(68)of the Paris agreement as a"turning point"in the world's response to climate change.China and the United States,(69)which together account for about 40percent of the world's emissions,will be represented at the signing ceremony.They (70)have been using/are using/will use(use) their political influence to urge an early implementation(實施) of the agreement.