Question

— _________, this math problem seemed quite simple to me, but when I tried to work it out, I just couldn’t.
— There are always things like this, I think

1. A.
   On one hand
2. B.
   In my opinion
3. C.
   At first sight
4. D.
   On its own

Answer 1

C
短语辨析.       A.一方面B.以我看来C.初看之下D.就其本身而言.句意:初看之下,这道数学题对我来说相当简单,但是当我尝试把它计算出来时……故选C，最符合语境。