The20th-centurypoemsuggeststosomethingwehavebeenabletofindnothingabout.

参考答案:

A

动词辨析，suggests建议，提出，使想起，暗示；而A. alludes暗指，影射，间接提到；B. avoids避 免，消除；C. alleges宣称.断言；D. alerts警告，因此A为答案。