Schilling试验是检测()
A.叶酸吸收障碍
B.维生素B12吸收障碍
C.叶酸排泄障碍
D.维生素B12排泄障碍
参考答案:B
The play_____ next month aims mainly to reflect the local culture.
A.produced
B.being produced
C.to be produced
D.having been produced
借款人还债的意愿和诚意是()
A.品德
B.能力
C.资本
D.担保和经营环境