Question

All people___they are older or young,rich or poor,have been trying their best to help those in need

since the disaster.
A.even if B.whether C.no matter D.however

Answer 1

C.no matter 无论,不管
所有人,无论他们是老还是年青,是富还是穷,都一直在尽他们的最大努力去帮助那些这次空难中有需要的人.
A即使,虽然
B是否
D然而
代入后,你会发现上面三项意思不符

Answer 2

正确答案c
A:语义前后不通
B。whether A or B
D.语义不通

Answer 3

应该是b ，whether，因为whether....or ... ：不管....还是;无论...还是，引导让步状语从句。

Answer 4

C
无论年长年幼、富贵贫穷，所有人...

Answer 5

答案：B.

翻译：所有人，无论老幼贫富，都在尽他们最大努力来帮助那些在危难/困难中的那些人。

解释：
1. 句中是一个很明显的让步状语从句，而ABCD都有该种用法。
2. 但是even if所引导的让步状语从句只表示一种情况，而不会出现or所表示的选择，排除。
如：Even if it rains, I'll also go shopping with you.
3. no matter后面的从句必须是以疑问词引导的，排除。
如：No matter where you are, I'll always miss you.
4. 而however所引导的让步状语从句中，however = no matter how，意思是“无论...怎样...”
但是句意不通，“无论他们是怎样的...”，而且从句中也不会出现or.
如：However hard I work, I can't catch up with you.
= No matter how hard I work, I can't catch up with you.
5. 而whether所引导的让步状语从句中，一般都会出现or表示选择，翻译为“无论/不管...还是...”。
如：Whether you are right or wrong, you should say sorry to her first.