题目

Since a university education in the United States   41   (be) very expensive, most students work m addition to studying. Students   42   (usual) work part-time, but some students take full-time jobs. A typical job for a students would be working   43   a waiter or waitress. Other typical off-campus jobs would include being a clerk in a store or delivering pizza. Sometimes students also find jobs on campus such as cleaning, working in a cafeteria or library or answering   44   (telephone). Most student jobs are entry-level and low paying, but have flexible schedule   4The change in climate may _______ our health. We should take good care of ourselves. A．effectedB．affectC．have effectD．have affect