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【单选题】
A.
在盐酸酸性条件下检查
B.
在硝酸酸性条件下检查
C.
在醋酸盐缓冲液(pH3.5)中检查
D.
在硫酸酸性条件下检查
E.
在磷酸盐缓冲液(pH6.8)中检查；以下杂质检查的条件是
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举一反三
【单选题】When they moved to another community, Roberts problem is______.
A.
still existing
B.
solved by another doctor
C.
not further mentioned
D.
solved by the parents
【简答题】During the past six years, airline industry has been hit by terrorism, war, ______which made the industry suffer a total loss of $44 billion.
【单选题】When they moved to Canada，the children________the change very well. [ ]
A.
adapted to
B.
adopted to
C.
used to
D.
attempted to
【简答题】相邻的多个对象常用选择方法:先单击要选择对象列表中的第一个或最后一个对象,然后按住键盘上的 键不放,再单击要选择对象列表中的最后一个或第一个对象并释放该键。
【单选题】I wrote a letter of complaint, and the airline has promised to _____ the matter.
A.
look up
B.
look into
C.
look through
D.
look for
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