Which country studied the genes most rapidly in the world（）

单项选择题According to this passage, boys are （）

A．more ready to spell
B．more ready to remember facts
C．stronger and more independent
D．quicker at learning

单项选择题Which of the following is NOT true（）

A．Girls remember things more easily.
B．Boys score higher on tests that measure mathematical reasoning.
C．Boys are more skillful at building things.
D．Girls are better at facts which measure problem solving ability.