The answer was followed by an impressive silence .
接着是一片沉默.
2.She is at the pains of finding the answers ...
她在努力寻求答案.
3.The angle of projection affects the answer .
抛射角对结果有影响.
4.Pay special attention to the sign of the answer .
特别注意答案的正负号.
5.Today only a few of the answers are known .
目前已知的答案只有少数几个.
解析：the answer 为特指,特指这个、某个答案（上文或情景中一般有暗示,交谈双方均知道语意）,
answer 做名词,意为答案,n.
1.回答,答复.
2.答案.
3.答辩,抗辩.
4.报复.用法：an answer to a question 某问题的解答.have no answer to (sb.'s letter) 无回音[回信].in answer to …以回答,为答复(抗议等)而.one who knows all the answers 〔美俚〕万事通；老世故.The answer's a lemon.〔回答荒唐提问时用语〕你这个(可笑的)问题,无法回答；废话!
