下列哪几项行为符合《关税和贸易总协定》的规定，哪几项不符合? a．美国对任何一个对美出口超过其从美国进口量2倍的国家征收20%的关税； b．美国对小麦出口实行补贴。以夺回一部分被欧盟抢走的市场； c．美国对加拿大木材征收进口关税，却没有对其他关税进行相应比例的削减； d．加拿大应美国的要求，对本国木材出口征税以安抚美国木材生产商； e．一项对高科技领域如电子和半导体的科研提供补贴的计划； f．政府对由于进口竞争而失业的工人提供特殊资助。 Which of the following actions would be legal under GATT，and which would not? a．A U.S. tariff of 20 percent against any country that exports more than twice as much to the United States as it imports in return． b．A subsidy to U.S. wheat exports，aimed at recapturing some of the markets lost to the European Union． C．A U.S. tariff on Canadian lumber exports，not matched by equivalent reductions on other tariffs． d．A Canadian tax on lumber exports，agreed to at the demand of the United States to placate U.S. lumber producers． e．A program of subsidized research and development in areas related to high-technology goods such as electronics and semiconductors． f．Special government assistance for workers who lose their jobs because of import competition．