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【单选题】
Donald got a high grade in math because ______.A.
he was good at math
B.
the questions were easy
C.
he copied from another boy
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【单选题】活动逻辑关系中的“结束A—开始B”关系是指( )
A.
活动A不结束，活动B不能开始
B.
活动A结束时，活动B必须已经开始
C.
只有活动B开始后，活动A才能结束
D.
活动A结束与活动B开始必须同时进行
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A.
init
B.
doPost
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doFilter
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doGet
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A.
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“ FTP 站点连接”的连接限制为 100
C.
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【单选题】The author suggests that in Canada during the 1950's ______.
A.
the urban population decreased rapidly
B.
the birth rate was very high
C.
economic conditions were poor
D.
fewer people married
【单选题】The urban population of the world ______ .
A.
has risen to around forty percent in the last 200 years
B.
will have risen to more than fifty percent by the year 2010
C.
has risen by forty-five percent since 1800
D.
will live in cities for the first time
【单选题】The author suggests that in Canada during the 1950s ______.
A.
the urban population decreased rapidly
B.
fewer people married
C.
economic conditions were poor
D.
the birth rate was very high
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