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【单选题】
. 下列关于麻疹流行病学的特点，描述正确的是（）
A.
学龄期发病率最高
B.
主要经直接接触传播
C.
合并肺炎患者的传染性可至出疹后 30天
D.
麻疹患者是唯一传染源
E.
出疹前、后10天均有传染性
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【单选题】My house _____ when you visited Beijing last time, so I didn’t invite you to my home.
A.
was being decorated
B.
is being decorated
C.
has been decorated
D.
was decorated
【单选题】The old man has retired from the factory. He _____ there for 30 years.
A.
works
B.
worked
C.
has worked
D.
was working
【单选题】She had to drop out of school _____ her family couldn’t afford the cost of her education.
A.
although
B.
unless
C.
because
D.
so
【单选题】The decorations were so lovely that they _____ in a short time.
A.
sold out
B.
has been sold out
C.
were sold out
D.
were selling out
【单选题】What was wrong with Mrs Jenkins?
A.
Something was wrong with her heart.
B.
Something was wrong with her back.
C.
Something was wrong with her foot.
相关题目：
【单选题】My house _____ when you visited Beijing last time, so I didn’t invite you to my home.
A.
was being decorated
B.
is being decorated
C.
has been decorated
D.
was decorated
【单选题】The old man has retired from the factory. He _____ there for 30 years.
A.
works
B.
worked
C.
has worked
D.
was working
【单选题】She had to drop out of school _____ her family couldn’t afford the cost of her education.
A.
although
B.
unless
C.
because
D.
so
【单选题】The decorations were so lovely that they _____ in a short time.
A.
sold out
B.
has been sold out
C.
were sold out
D.
were selling out
【单选题】What was wrong with Mrs Jenkins?
A.
Something was wrong with her heart.
B.
Something was wrong with her back.
C.
Something was wrong with her foot.
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