问题
选择题
We’ll not attend his party _____ we are invited. [ ]
A. on condition
B. unless
C. whenever
D. as though
答案
答案：B
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We’ll not attend his party _____ we are invited. [ ]
A. on condition
B. unless
C. whenever
D. as though
答案：B
深龋，曾有过夜间疼痛，遇冷热痛，检查：龋未穿髓，电测反应迟钝，叩诊（±）．应诊断为（）