主键盘区基准点在（）两个键上。
A.“G”“H”
B.“A”“B”
C.“W”“Y”
D.“F”“J”
参考答案：D
He expressed his hope ____ he would visit China again the next year, and this was the very hope ____ he expressed as soon as he arrived in the country.
A．that; that
B．which; which
C．that; which
D．which; that
婴幼儿颌骨骨髓炎主要感染来源（）
A.血源性
B.牙源性
C.医源性
D.腺源性
E.损伤性
