How much is the T-shirt?[ ]
A. It's 7 o'clock.
B. It's 20 yuan.
C. It's red.
答案:B
新型治疗糖尿病药物~~胰岛素增敏剂是
A.格列吡嗪B.氯磺丙脲C.阿卡波糖D.苯乙双胍E.罗格列酮
凿井注浆可在()进行。
A.凿井前
B.掘到含水层
C.遇到含水层时