高考考试

【单选题】By the first decade of the 21st century, international commercial air traffic is expected ______. vastly beyond today’s levels.
A、 to have extendedB、 being extended
C、 to be extending
D、 having been extended

网考网参考答案：A
网考网解析：
[解析] expect后面跟带不定式的复合结构：expect sb．to do sth．。如果要表示“预料在将来某个时间某人会做完某事”，就应说expect sb．to have done sth．(后面跟一个表示时间的状语)，因此变为被动语态就成了本题的commercial traffic is expected to have extended beyond today’s levels。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>