29. At times, worrying is a normal, inevitable（不可避免的） response to a difficult event or situation--- a loved one being injured in an accident, ____.
A. what’s more B. for example C. in general D. on the other hand
30. In1994, China began collecting income tax from citizens earning more than 800 Yuan per month but only 1% people were earning more than _______; now about 60% earn the amount.
A. this B. these C. those D. that
