1. Harry and Terry simultaneously solve the calculation problem $8-(2+5)$. Harry arrives at the correct answer, while Terry, ignoring the parentheses, incorrectly solves it as $8-2+5$. If Harry's answer is $H$, and Terry's answer is $T$, then $H-T=$ ( ).
(A) -10
(B) -6
(C) 0
(D) 6
(E) 10
1. A.

From the problem, we know
$$
\begin{array}{l}
H=8-(2+5)=8-7=1, \\
T=8-2+5=11 .
\end{array}
$$

Therefore, $H-T=-10$.