推 htl :casually應指隨性不規律的行為，habitual用來形容規 08/20 15:46
→ htl :律的行為模式 08/20 15:46
哈囉 大家
Since many people who casually tan indoors develop skin cancer and many_____ indoor tanners do not, scientists believe that individuals differ in their susceptibility to the development of melanoma.
(A)habitual
(B)frequent
(C)chronic
答案是A
想請問大家為什麼不能用B呢???
麻煩大家了Orz!
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