判断题 为了引起被调研者的关注，通常可以采用增设奖项的方法，给与被调研者适当的物质激励。

单项选择题 人类发现的第一种母系遗传的疾病是（   ）A. Leber遗传性视神经病B. 抗维生素D性佝偻病C. KSS综合征D. 肌阵挛性癫痫伴碎红纤维病E. 线粒体脑肌病伴乳酸中毒及中风样发作综合征

单项选择题 Which of the following is wrong in Chinese business dinner? A、The hosts serve the guests cups of tea B、The hosts usually wait and welcome the guests at the table C、The hosts invite the guests to sit in the right seats D、Remember to sit down from the left of the seat