单选题
In the geography lesson, the teacher told the children that the earth ______ round like a ball.
A、
was
B、
is
C、
were
D、
had been
【正确答案】
B
【答案解析】
[考点] 动词时态
一般现在时可表示客观事实和普遍真理,虽然本题主句谓语用的是过去时,但宾语从句所表述的“地球是圆的”是一种客观事实,因此应用一般现在时。故选B。
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