多项选择题
下列哪些器官属腹膜内位器官()
A.脾B.胰C.阑尾D.胃E.左肾上腺
多项选择题 “胃床”由下列哪些器官参与组成()
单项选择题 There are ________ periods in an animal’s life when it is capable of learning a great deal in a very short time.A) urgentB) violentC) seriousD) critical
单项选择题 The word “fallacy” (Para. 2. L. 6) means ________.A) doubtB) factC) strong argumentD) wrong belief