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【简答题】
阅读理解。 My good friend Lucy has a big (大的) family. Many (许多的) members are in her family: her grandparents, her parents, her uncle, her aunt, her two cousins and she. Alan and Gina are her grandparents. Nick and Sonia are her parents. Paul is her uncle and Mona is her aunt. Dave is Paul and Mona's first son. He is 12. Tim is Dave's brother. He is 10. 根据短文内容，选择正确选项。 1. _____ members are in Lucy's family. A. Six B. Seven C. Eight D. Nine 2. Alan is Lucy's _____. A. grandfather B. father C. uncle D. brother 3. Lucy's parents are _____. A. Alan and Gina B. Nick and Sonia C. Paul and Mona D. Dave and Mona 4. Tim is Lucy's _____. A. brother B. cousin C. friend D. son 5. Dave is _____ years older than Tim (比蒂姆大……岁). A. 12 B. 10 C. 4 D. 2
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皮皮学刷刷变学霸
举一反三
【简答题】四种常规热处理中, 最终热处理有 __________ 、 __________ 。
【单选题】关于早期釉质龋病变，错误的是( )
A.
肉眼观察为灰白色不透明区
B.
透明层位于病损前沿
C.
脱矿主要发生在表层
D.
暗层孔隙增加，占釉质容积的2%～4%
E.
病损体部生长线及横纹较清楚
【单选题】釉质龋中的透明层
A.
是病变范围最广泛的一层
B.
龋损时最早发生的组织学改变
C.
脱矿和再矿化同时存在
D.
与病损体部相连
E.
该层的空隙容积约占釉质容积的 5 ％
【单选题】——How long has his father ________London? ——For two weeks.
A.
been to
B.
gone to
C.
been in
D.
arrived in
【简答题】反射活动的结构基础
【单选题】关于平滑面牙釉质龋显微镜下所见哪项是错误的
A.
早期，病损区的釉柱横纹及生长线变得明显
B.
牙釉质龋继续发展，牙釉质深层受累，病损区呈三角形
C.
三角形的基底部向着牙釉质的表面
D.
三角形的基底部向着牙釉质牙本质界
E.
在三角形病损处，可见淡棕黄色色素沉着，其边缘处颜色较深
【单选题】Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an ____.
A.
Orsat apparatus
B.
flame safety lamp
C.
Halide torch
D.
combustible gas indicator
【单选题】—Hello! May I speak to Alice? —Sorry, she _____ Shanghai.
A.
have gone to
B.
has been to
C.
has been in
D.
has gone to
【简答题】人体完成反射活动的结构基础是反射弧。
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