题目

命题“2x2-5x-3＜0”的一个必要不充分条件是…(    )A.＜x＜3           B.＜x＜4           C.-3＜x＜              D.0＜x＜6 答案：BWhich of the following underlined parts is different in pronunciation from others?A.My parents often encourage me to solve the problems by myself.B.We will exchange presents at the end of the Christmas party.C.David became impatient when he heard the noise from the room.D.The manager gave a full explanation on the new project at the meeting.