单选题
”This is the best present I’ve ever received,”Mary said with a smile trying to____her tears.
Akeep down
Bkeep up
Ckeep back
Dkeep at
正确答案
答案解析
本题考查短语辨析。题目意为：“这是我收到的最好的礼物”，玛丽忍住眼泪笑着说。”A项keep down意为“控制，镇压”。B项keep up意为“坚持，继续”。C项意为keep back“阻止，忍”。D项keep at意为“坚持，纠缠”。