在变黄期,一般要求湿球温度比干球温度低()℃
A、1-4
B、4-5
C、5-6
D、6-7
参考答案:A
It is strange that such a thing ________ in your school.[ ]
A. will happen
B. happens
C. should happen
D. happened
前牙深覆的颅面骨骼形态().
A.上颌前突,下颌正常
B.上颌正常,下颌后缩
C.上颌正常,下颌前突
D.上颌前突,下颌后缩
E.上颌后缩,下颌前突