【单选题】It is a myth that the law permits the Food and Drug Administration to ignore requirements for ______ drugs while brand-name drugs still must meet these rigid tests.
【单选题】《流浪地球》电影中描述到了木星。木星质量比地球大得多木星对地球的引力大小为 F 1 ,地球对木星的引力大小为 F 2 ,则 F 1 与 F 2 的大小关系为( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>