想确诊进一步检查应选择
A．胃液分析B．腹部B超C．胃镜D．化验淀粉酶E．查CEA
参考答案：C
His parents ______ in the country, but now they live in the city. [ ]
A. used to live
B. used to living
C. were used to live
D. are used to living
试结合自身的实际，论述美育的基本方式。
