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【单选题】
关于牙骨质龋的病理表现叙述错误的是A.
牙骨质龋的细菌通道为穿通纤维
B.
早期表层矿化较好，但是表层下
C.
相应牙本质的髓腔侧出现修复性牙本质
D.
牙骨质龋进展较快，会很快进展到牙本质
E.
发生颈部的牙本质龋比的牙本质龋进展快
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【简答题】Now many loved couples like to celebrate their wedding a____________.
【单选题】Now all Chinese couples ______ to have two kids.
A.
are allowed
B.
were allowed
C.
allow
D.
have allowed
【单选题】Now all Chinese couples ___to have two children.
A.
allow
B.
are allowed
C.
allowed
D.
were allowed
【单选题】Drunk driving used to occur ________ in our city，but now such cases are rare.
A.
practically
B.
generally
C.
frequently
D.
gradually
【单选题】Now all Chinese couples _____________to have two children.
A.
allow
B.
allowed
C.
are allowed
D.
were allowed
【单选题】Because of me, 60 couples are now happily married or ________.
A.
encouraged
B.
engaged
C.
in caged
【简答题】一块无色透明具有柱状外形的矿物,要求判断是方解石还是石英,写出可用的鉴定方法。
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