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【单选题】
常见的必需基团有天冬氨酸上的A.
咪唑基
B.
羟基
C.
巯基
D.
侧链羧基
E.
苯环
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举一反三
【单选题】在Excel工作表中,正确的公式形式为 。
A.
=B3*Sheet3!A2
B.
=B3*Sheet3$A2
C.
=B3*Sheet3:A2
D.
=B3*Sheet3%A2
【简答题】A．It is small but delicately built across the harbour. B．It doesn't have any restaurants in it. C．Its foundation is 67 meters above sea level. D．Its roof is supported on about 600 concrete columns.
【单选题】You can ___ any new words in the dictionary when you come across them.
A.
look up
B.
look through
C.
look after
D.
look for
【单选题】听力原文：Could you recommend any good place to eat around here? (A) There's one across the street. (B) You need at least one recommendation. (C) Yes, I already ordered my lunch. (31)
A.
B.
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