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【单选题】
The second paragraph implies that testing for anabolic steroidsA.
is always accurate and reliable．
B.
is proved to be inaccurate．
C.
may sometimes show inaccuracy．
D.
has helped end doping in sport．
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【简答题】混凝土强度等级为C30，即立方体抗压强度标准值为30N/mm2，它具有的保证率。
【简答题】混凝土强度等级为 C30 ,即混凝土 为 (填写中文名字) ,它具有 的保证率。
【简答题】It will be cold tonight. ______ an extra sweater.
【简答题】Please write an "unstated" premise that would lead to the conclusion. "Of course it will be cold tomorrow! It's been cold all week, hasn't it?"
【简答题】混凝土强度等级为 C30 ,即 为30N/mm2,它具有 的保证率。
【简答题】3. ( Will it be ,
will it is) cold tonight?
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