单项选择题
喷射基坑支护混凝土水泥优先选用()。
A.矿渣硅酸盐水泥
B.火山灰硅酸盐水泥
C.硅酸盐水泥
D.复合硅酸盐水泥
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单项选择题
――____.―――What's the matter7 .A.Hello! B.Is that Tom speaking? C.Help! D.Excuse me.
A.―――What's
B.
A.Hello!
C.Is
D.Help!
E.Excuse
F.
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单项选择题
―――I feel sick,doctor.――____. ―――I'm not sure,but I have got a bad headache.A.How long have you been sick? B.I'm sorry to hear that.C.How are you feeling now? D.Do you have a fever?
A.――____.
B.
A.How
C.I'm
D.
C.How
E.Do
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