9.As developed countries vault forward on the back of new technologies, others will fall painfully farther behind.
(A) move quickly
(B) move slowly
(C) launch suddenly
(D) stop suddenly

答案：登入後查看
統計： A(206), B(41), C(27), D(2), E(0) #121075

詳解 (共 4 筆)

#367667
開發國家借著新科技快速進步，而其它的國家則遠遠落後。

名詞
拱頂
 
動詞
撐竿跳
6
0
#367263

vault:

n 拱頂;穹窿
v. (1) jump across or leap over (an obstacle)
    (2) bound vigorously  也就是此題的mobe quikcly之意

(不過整句看不太懂  囧)

3
0
#361385

這題根本沒標示要問什麼？只能自己猜測是問"vault forward" ><"

2
0
#1081249
感恩樓上。另外查了一下：
（轉）From Longman Dictionary Online:
on the back of something: as a result of something that already exists or something you have already done （www.english.com.tw/modules/newbb/viewtopic.php?post_id=12001）
0
0