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硫酸盐检查适宜的浓度范围是相当于标准硫酸钾溶液
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Japan bombed Pearl Harbor in 1941. The United States was mad at the Japanese so they made many Japanese-Americans leave their homes. They were put in camps with barbed wire around the outside of the camps.Many Japanese-American young men were called into the army. Some of them joined the U.S. Military Intelligence Service or MIS. The MIS was a secret group that fought the Japanese soldiers. This secret group translated important maps and papers. They questioned Japanese prisoners, Another task they did was to translate diaries written in Japanese.Sometimes Japanese soldiers hid in caves to hide from, the Americans. The MIS would try to get the scared soldiers to leave the caves. This was known as "cave flushing." Some of the soldiers would give up and leave the caves.Other Japanese would jump to their deaths.The MIS never got awards for their efforts until the year 2000. Then they were rewarded for their brave acts in World War II. It took almost sixty years for them to be honored.Gayle Yamada has made a film about the brave Japanese-American MIS. The film is called "Uncommon Courage" and is a true story. Hopefully, Yamada’s film and the movie, "Pearl Harbor," will not cause people to hate Japanese-Americans or any other race. Writer hopes that a new movie won’t()
阅读下面短文，从短文后所给的[A]、[B]、[C]三个选项中选出能填入相应空白处的最佳选项。 In American high schools, most students (41) English, science, math and history (历史,履历). These are basic (基础) courses and each course (过程,教程) is as (42) as the others. In English class, the students study grammar (语法) and read famous literature (文学). In science class, they study biology (生物学), chemistry (化学) or physics (物理). History is more interesting (43) some students because they (44) about important events (事件) and places in the United States. Students take other, courses, too. These are electives (先修课程). Some of them are music, home economics (家政学) and computer science. Students don’t (45) take all of these courses. Some study music because they feel it is more (46) . Some study computer science because they think it is more practical (实用的). In (47) class, teachers give students exams. Some exams are (48) difficult than (49) , but a good student can (50) do well.
青霉素V钾
三环类抗抑郁药中毒发生心律失常时，可用( )。
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