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【简答题】
单体的相对活性习惯上用_____判定,自由基的相对活性习惯上用_____判定。
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】当用户选中一个对象并单击鼠标右键时,出现的菜单叫 。
【单选题】I hope they ______ the bridge by the time we leave at the end of this month.
A.
have built
B.
will have built
C.
will build
D.
are to build
【单选题】From the top of the building, we can see the bridge____construction.
A.
by
B.
in
C.
under
D.
below
【简答题】We ( ) finishing the construction of the bridge.
【单选题】The bridge _ when we arrived there last time.
A.
is built
B.
was built
C.
is being built
D.
was being built