複選題61 (AB) In a decade we’ll still need oil for plastics and other petrochemicals, but not for energy (AC) The growing competitiveness of renewables makes analysts optimistic that the trend will continue (AD) Declining revenues could force oil-producing states to suspend new solar projects (AE) The reasons for a low capacity factor can include things over which we have no control, such as the weather (BC) Conflicts in neighboring countries have damned Jordan’s efforts to export solar power to Lebanon (BD) For a start, Arab autocrats often promise more than they could deliver in reality (BE) But the recent collapse in oil prices is a reminder that it is risky to depend on a single source of revenue