[单选题]以下哪项不是以公司信用基础为标准划分的( )
A.人合公司
B.资合公司
C.两合公司
D.人合兼资合公司

Reading is the key to school success and it takes practice. A child learns to walk by practicing until he no longer has to think about how to put one foot in front of the other. A great athlete practices until he can play quickly, accurately, with- out thinking. Tennis players call that "being in the zone". Educators call it "automatically".
A child learns to read by sounding out the letters and decoding the words. With practice, he stumbles less and less. Then automatically, he doesn’t have to think about the meanings of the words, so he can concentrate on the meaning of the text.
It can begin as early.as first grade. In a recent study of children in Illinois schools, Alan Rossman of Northwestern University found automatic readers in the first grade who were reading almost three times as fast as the other children and scoring twice as high on comprehension tests.
"It’ s not I. Q. but the amount of time a child spends r
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