With the World Cup at hand, _______ has

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问题选择题

With the World Cup at hand, _______ has been a heated discussion over which country the championship will go to.

A．it

B．what

C．there

D．as

答案

答案：C

单项选择题 B1型题

缺铁性贫血贫血期的实验室检查的特征性指标（）

A.红细胞游离原卟啉＞500μg／L

B.血清铁＜9.0～10.7μmol／L（＜50～60μg／L）

C.血清铁蛋白＜12μg／L

D.外周血涂片示小细胞性贫血

E.血红蛋白和红细胞数降低

单项选择题

The variation for most given areas undergoes（）change，the amount of which is also noted on charts.

A.an annual

B.a constant

C.a variable

D.an unstable