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【单选题】
渣壳的线胀系数越大,越( )脱渣。A.
难
B.
容易
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【单选题】As soon as _____ concert film 'This Is It' was released on October 28th, it became _____ great success in all big cinemas across the planet. [ ]
A.
a; the
B.
the; a
C.
the; 不填
D.
a; a
【简答题】试述空气滤清器的功用。
【单选题】The celebration of Valentine's Day became unfashionable in the ______ century.
A.
14th
B.
15th
C.
17th
D.
19th
【单选题】Which of the following sounds more informal and more natural?
A.
Get together.
B.
Meet.
C.
See.
【单选题】Which sentence sounds more professional?
A.
“How may I assist you today?”
B.
“Service?”
C.
“What do you need, sir?”
D.
“What do you want?”
【简答题】被称为“几何之父”的是（）
相关题目：
【单选题】Which of the following sounds more informal and more natural?
A.
Get together.
B.
Meet.
C.
See.