30________
A. strength
B. independence
C. importance
D. safety
第1题:
One big()of formal education is the high cost.
A. advantage
B. disadvantage
C. strength
第2题:
A、In isolation; in contexts
B、In dependence; in discourse
C、In isolation; in discourse
D、In dependence; in contexts
第3题:
第4题:
A、harmony,safety,education的缩写
B、harm,service,energy的缩写
C、health,safety,environment的缩写
D、health,safety,energy的缩写
第5题:
A.security(安全)
B.security(安全)和safety(可靠)
C.safety(可靠)
D.risk(风险)