Though the plan for a school swimming pool was___because of the lack of money,we are going to do what we can to complete it.
A.achieved B.challenged C.dropped D.finished
（challenge有哪些用法？）

选c


n.
1. 挑战;邀请比赛[C][+to-v]
He received a challenge to a TV debate.
他接到电视辩论的挑战。
2. 质疑;指责;异议[C]
3. 颇有作为的工作;艰巨的事[C]
To build a road in the mountainous area was a real challenge.
在山区修筑公路确是艰巨的事。
He wants a career that offers a challenge.
他要有挑战性,能有一番作为的事业。
4. (哨兵,警卫等)查问口令;盘问[C]
I was met with a challenge when approaching the post.
我在走近哨所时被查问身份。
5. 【律】(对某陪审员出庭等表示的)反对[C]
6. 有挑战性[U]
vt.
1. 向...挑战[(+to)][O2]
I challenged him to show his proof.
我要他拿出证据。
2. 对...提出异议;怀疑;反对
He challenged my view on that matter.
他就我对那件事的看法提出异议。
3. 要求,需要;刺激,激发[O2]
The new position challenged him to study still harder during his spare time.
那个新职位激发他在业余时间更加努力学习。
The event challenges an explanation.
那个事件需要解释。
4. (哨兵,警卫等)查问;盘问
5. 【律】宣布反对(某陪审员等)