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【单选题】
急性化脓性根尖周炎的临床表现，除外A.
持续性跳痛
B.
咬紧牙时疼痛缓解
C.
根尖区红肿
D.
叩诊痛
E.
患牙有伸长感
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举一反三
【单选题】The author of the passage uses the term "staged pleas“ in Paragraph 2 in order to _________.
A.
illustrate the dramatic quality of her students’ readings
B.
suggest that there might be an opportunistic motive for her students’ behavior
C.
praise herself on formulating a useful technique for teaching writing
D.
show the effectiveness of her students’ reading their work aloud
【单选题】I begged the family not to kill the wild animal, and they finally listened to my pleas .
A.
requests
B.
questions
C.
suggestions
D.
pleasures
【单选题】Stephen invited me to dinner the day before yesterday and I______his invitation with pleasure.
A.
accepted
B.
promised
C.
permitted
D.
received
【简答题】与凸模圆角接触的板料部分，拉深时其厚度 。
【简答题】半合成青霉素一般以( )为原料,与各种侧链-COOH缩合;常用的缩合方法有( )、( )和( )。
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