找规律算出11111×11111的结果是多少?
11×11=121,
111×111=12321,
1111×1111=1234321;
所以11111×11111=123454321.
If nature does not provide man with the necessary material, it is the laboratory ____ he will turn to for it. [ ]
A. where
B. that
C. which
D. what