【題目】Obesity is ________ major concern for public health officials and also may affect ________ test scores of students.
A.a; /
B.a; a
C.the; /
D.the; the

【答案】A
【解析】句意：肥胖是公共衛(wèi)生官員的一個(gè)主要關(guān)注，也可能影響學(xué)生的測試分?jǐn)?shù)。第一空表示泛指，用不定冠詞；第二空后是名詞復(fù)數(shù)形式，不用冠詞，所以答案是A。

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