【单选题】His refusal to walk through the metal detector before boarding the plane ______ the guard's suspicion.
【单选题】The Minister’s ________ statement before boarding the plane left the reporters guessing as to the true purpose of his trip.
【简答题】Passengers will u ( 经受 ) body searches by security guards before boarding the plane.
【单选题】Passengers will body searches by security guards before boarding the plane.
【简答题】(本小题满分12分) 一个口袋巾装有标号为1,2,3的6个小球,其中标号1的小球有1个,标号2的小球有2个,标号3的小球有3个,现从口袋中随机摸出2个小球. (I)求摸出2个小球标号之和为3的概率; (II)求摸出2个小球标号之和为偶数的概率; (III)用 表示摸出2个小球的标号之和,写出 的分布列,并求 的数学期望 .
【简答题】读“眼球结构图”,回答下列问题. (1)图中标号1的结构名称是______;标号2是______;标号4是______. (2)眼球内容物包括______、______和______. (3)我们看到的物体在______上成像. (4)视觉最终在______形成.
【单选题】Before boarding the airplane, you have to check in ___ luggage over there.
【简答题】Before boarding the airplane, you have to check in ________ luggage over there.
【简答题】下图是心脏的解剖图,根据你的观察回答下列问题 (1)心脏四个腔的名称:标号①是_______、标号②是__________标号③是________标号④是_______。 (2)心脏的四个腔中壁最厚的是__________,和它相连的血管是_______。 (3)在心脏的________之间、________之间都有防止血液倒流的辨膜。
【简答题】(泰州期末)AII the passengers, according to the new regulation, ___before boarding the subway.A. will inspect B. are to be inspected C. are going to inspect D. are about to be inspected