The second can be written between two lines but part of the letter is above the top line.
第二个可以写在两行之间，但是字母的一部分在最上面一行之上。
2
Then mark the corresponding letter on Answer Sheet 1 with a single line through the center.
然后在答题卡1对应字母中处划横线。
3
For each of them there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.