【单选题】The Food and Drug Administration said Wednesday that it is trying to track down as many as 386 piglets that may have been genetically engineered and wrongfully sold into the U.S. food supply. The focu...
B.
an American research organization
C.
a meat processing plant
【单选题】“220V40W”灯炮中220V是交流电压的()
【单选题】当一名队员在执行罚球,他必须在()秒钟内出手。
【单选题】How many reasons does the speaker give for the fact that animals worldwide are in danger in Track4-1?
【多选题】蓝鲸是动物世界的大力士。一头蓝鲸前进所产生的功率相当于一个中型火车头的拉力。
【单选题】“ 220V40W ”灯炮中 220V 是交流电压的()
【多选题】蓝鲸是动物世界的大力士。一头蓝鲸前进所产生的功率相当于一个中型火车头的拉力。