专四专八考试

【单选题】Our knowledge about agriculture has so far been ______ confined to books.
A．primarily
B、exclusively
C、repeatedly
D、undoubtedly

网考网参考答案：B
网考网解析：
[解析] 副词辨析题。exclusively意为“唯一地；专有地；排外地”，符合句意，故B为答案。primarily意为“首先；主要地，根本上”；repeatedly意为“反复地；再三地；屡次地”；undoubtedly意为“确实地，毋庸置疑地”，故均排除。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>