问题 单项选择题 A1/A2型题

X线牙片上牙齿邻面颈部所呈现的三角形透明区是()

A.邻面龋

B.正常牙颈部

C.牙槽嵴吸收

D.牙颈部脱钙

E.投照角度不正确所致

答案

参考答案:B

写句子

句子加工厂(按要求写句子)。  

1.把陈述句改为反问句。 

     假如我被人捉去,关在笼子里,永远不得回来,我的父亲、母亲定会心碎。  

                                                                                                                                                 

2.把反问句改为陈述句。

     不错,目前的中国,固然是江山破碎,国弊民穷,但谁能断言,中国没有一个光明的前途呢? 

                                                                                                                                                  

3.凡是到都江堰参观的人都要来看看索桥。(改双重否定句)  

                                                                                                                                                 

4.雨过天晴,太阳出来了。(改为拟人句)

                                                                                                                                                 

单项选择题