题目内容

Don't you know ________ boy under the tree? He's our teacher's son.

A. a
B. the
C. /
D. an

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There is U andS in the word BUS.

A. an; a
B. a; an
C. an; an
D. the; the

Obama, ______President of the USA , made a speech on TV last night.

A. /
B. a
C. the
D. an

Whatfine weather we have these days!

A. an
B. a
C. /
D. the

玉米苗期丰产长势长相是:地上部高度增长较慢,没有病虫害。

A. 叶宽厚而浓绿
B. 根系发达
C. 地上部高度增长较慢,没有病虫害
D. 茎基发扁,植株墩实,壮而不旺

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