They are ________ more money to the poorest countries to solve the starvation pThey are ____________ Western countries to give more money to the poorest countries to solve the starvation problem.A calling on B calling off C calling at D calling up讲

They are ________ more money to the poorest countries to solve the starvation pThey are ____________ Western countries to give more money to the poorest countries to solve the starvation problem.A calling on B calling off C calling at D calling up讲
They are ________ more money to the poorest countries to solve the starvation p
They are ____________ Western countries to give more money to the poorest countries to solve the starvation problem.
A calling on B calling off C calling at D calling up
讲讲嘛,

They are ________ more money to the poorest countries to solve the starvation pThey are ____________ Western countries to give more money to the poorest countries to solve the starvation problem.A calling on B calling off C calling at D calling up讲
答案为A:号召的意思
call on
拜访(某人)
He often calls on me.
他常常来拜访我.
叫, 号召
The government called on the workers to oppose waste.
政府号召工人反对浪费.
要求, 请求
He called on his friends to help him.
他向朋友求助.
call off
把…叫走
I called off my dog when he came.
他来时我把狗叫走了.
I was twice called off from my work today to answer the phone.
今天我两次丢下工作去接电话.
取消; 停止
He phoned me and called the appointment off.
他给我打电话取消了这次约会.
It was decided to call off the search when there was no hope of finding the missing child alive.
在没有希望找到那名失踪的孩子生还时, 决定停止搜寻.
The engagement has been called off.
婚约取消了.
转移(某人的注意力等)
Don't let anything call off your attention from your studies.
不要让别的事转移你学习的注意力.
点名, 逐一念出
The teacher began to call off the names on his list.
老师开始按名单点名.
call at
到…进行短暂访问
He called at Mr. James this afternoon.
他今天下午到詹姆斯先生家去拜访了他.
停留
Does the ship call at Hong Kong?
这艘船在香港停靠吗?
call up
朝上方叫喊
From the bottom of the stairs Mary called up, “Have you seen my glasses?”
玛丽在楼下朝楼上大声问“你有没有看到我的眼镜?”
〈美〉给…打电话
The radio station had an open line on which listeners could call up to discuss various issues.
这家电台开放线路, 听众可打电话参加各种问题的讨论.
Please call me up at any time.
请随时打电话给我.
〈英〉叫醒
The doctor was called up three times during the night to attend urgent cases.
医生夜里三次被叫醒去看急诊病人.
使回忆起
The photo calls up the story of my childhood.
这张照片使我想起童年时代.

call on sb. to do sth 选A

选A
call on 是号召的意思
call off 是取消的意思
call at是访问，或者停靠
call up给某人打电话

他们在呼吁西方国家向最贫困的国家捐钱来解决当地的粮食匮乏问题 选A call on 呼吁~up给…打电话;回忆 ~off取消 ~at拜访某地