下列人体组织和体液中，哪一种声衰减最少（）。
A.心脏
B.胆汁
C.皮下脂肪
D.肌肉
E.肝脏
参考答案：B
In this park,the number of visitors is strictly _____ to avoid damaging the environment. [ ]
A. limited
B. encouraged
C. expected
D. hoped
借款人提前还款不需要经过信贷经营部门同意。
