21. China is a wonderful land ______ minerals.
A. is abundant in B. abundant in C. in abundant D. is in abundant
22. ______ the cold, thin air and low oxygen levels also can cause mountain sickness.
A. On behalf of B. Apart from C. In terms of D. Except for
23. We often associate the name of Li Ning ______ gymnastics.
A. with B. by C. to D. in
