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【单选题】
在加拿大,新近参加工作第一次申领失业保险金的,失业前工作时数应达到A.
100-300 小时
B.
350-600 小时
C.
650-800 小时
D.
910 小时及以上
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反馈参考答案：
举一反三
【单选题】I have a ping-pong ball, __________I don't have a ping-pong bat. [ ]
A.
and
B.
or
C.
but
D.
for
【简答题】I have a ping-pong ball and two bats．L _______play ping-pong．
【单选题】—Let's play ping-pong. —_____ Let's go. [ ]
A.
I don't have a ping-pong bat
B.
That sounds boring
C.
Sorry, I don't like it
D.
That sounds great
【单选题】—I like playing sports. Let's play _____ . —It sounds _____ . [ ]
A.
the ping-pong; good
B.
ping-pong; well
C.
ping-pong; good
D.
the ping-pong; well
【单选题】I often ______________ on Sundays. [ ]
A.
plays ping-pong
B.
play ping-pong
C.
play the ping-pong
【简答题】关系模型的完整性包括实体完整性、 完整性、域完整性和用户定义完整性。
相关题目：
【单选题】I have a ping-pong ball, __________I don't have a ping-pong bat. [ ]
A.
and
B.
or
C.
but
D.
for
参考解析：
知识点：
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