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听力原文：W: Are you going to graduate next year? M: I don't think so. I don't have enough credits in my major yet and I still have some basic courses to take. Q: What does the man mean? (17)A.
He wants to stay in school longer after graduation.
B.
He needs more credits before graduation.
C.
He is going to drop out of school.
D.
He has taken all his classes in his major.
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皮皮学刷刷变学霸
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【单选题】p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Times New Roman'; color: #000000}span.s1 {font: 10.6px 'Times New Roman'}span.s2 {text-decoration: underline} Motivation is best defined as a proce...
A.
results in a level of effort
B.
intensifies an individual's efforts
C.
accounts for an individual's efforts toward attaining a goal
D.
meets an individual's needs
【单选题】Motivation is best defined as a process that ________.
A.
results in a level of effort
B.
intensifies an individual's efforts
C.
accounts for an individual's efforts toward attaining a goal
D.
meets an individual's needs
E.
stabilizes over time
【简答题】(1)BN是一种新型的无机材料，由于 属等电子体物质，其结构和性质具有极大的相似性，则可推知，在BN的两种晶型中，一种是类似_________的空间网状结构晶体，可用作耐磨材料；另一种是类似于_________的层状结构的混合型晶体，可作用润滑材料，在其结构的每一层上最小的封闭环中有 _________个B原子，B—N键键角为_________。 (2)单质硼有无定形体和晶体两种，参考下表数据。 ...
【单选题】对于人工喂养的早产儿,选择配方奶粉喂养是因为
A.
易发生呼吸暂停现象
B.
为减轻生理性黄疸
C.
肾小管排酸能力差
D.
容易发生严重感染
E.
早产致视网膜发育不良
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