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【单选题】
附着在心脏右心室出入口周缘的瓣膜有( )A.
三尖瓣
B.
二尖瓣
C.
主动脉瓣
D.
肺动脉瓣
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举一反三
【简答题】Since Habitrol contains nicotine, it can only be used in those who ______ .
【单选题】The dentist has decided to extract her bad tooth．
A.
take out
B.
break off
C.
push in
D.
dig up
【单选题】—Sorry, I have to now. It’s time for class. —OK. I’II call back later.
A.
break up
B.
hang up
C.
give up
D.
hold up
【单选题】A ________ contains between 15 and 50 retail stores, including a department or variety store, a supermarket, specialty stores, professional offices, and sometimes a bank.
A.
community shopping center
B.
warehouse club
C.
superstore
D.
neighborhood shopping center
E.
regional shopping mall
【单选题】In the face of increased competition from discount houses and specialty stores, department stores are waging a comeback war. Two models for department stores success seems to be emerging. The first is...
A.
“tourist” area stores
B.
single brand store
C.
limited variety store
D.
specialty store
E.
showcase store
【单选题】Specialty stores, unlike department stores, handle only one line of merchandise____a limited number of closely related lines.
A.
either
B.
but
C.
or
D.
instead
【简答题】Only those who work hard will be favored in the fierce competition.
【单选题】Only those who have enough courage and determination can _______ the difficulty they meet with.
A.
undertake
B.
upset
C.
overcome
D.
download
相关题目：
【单选题】The dentist has decided to extract her bad tooth．
A.
take out
B.
break off
C.
push in
D.
dig up
参考解析：
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