单项选择题

The main difficulty in solving the food problem is ______.

A．backward social and economical background
B．lack of information about food needs
C．conflicts between "haves" and "haves-not"
D．lack enough funds to modernize agriculture

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单项选择题

Dr. Manmatha's program is aimed to ______.

A．make it possible to search handwritten documents on the web
B．make the great amount of handwritten information available
C．find the digital counterparts of every kind of handwriting
D．classify the handwritten documents stored in the Congress

单项选择题

The breakthrough in Dr. Manmatha's program is that ______.

A．the digital counterparts of handwritten letters can be found
B．rules in the variations in handwritten letters are found
C．the influence of people's reading habits on writing is traced
D．sentences and words rather than letters are taken as a whole