Really good cooks are few and far between（）

A．当我们长大后，没必要变得更聪明了。
B．随着我们年龄的增长，我们未必会变得更聪明。
C．随着我们年龄的增长，我们不是必然会变得更聪明。
D．当我们长大后，未必就会变得更加聪明。

A．the automatic reader can read faster and score higher than other readers
B．the more difficult the reading passage, the faster the automatic reader can read
C．the first grade students can read three times faster than those in higher grades
D．no one can read faster than the first grade students