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【单选题】
茶叶中含有多种矿物质元素,其 ( )比一般植物含量高。A.
钙和铁
B.
氟和碘
C.
氟和锰
D.
氟
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反馈参考答案：
举一反三
【单选题】( )17. I _______ her half an hour ago, but her mobile phone ______ turned off.
A.
call, is
B.
called, is
C.
am calling, was
D.
called, was
【判断题】判断时态: ( 1 ) A boy is crying . (2) I saw her half an hour ago. she saw near the gate. (3) I ’ m going to ask the gatekeeper.
A.
正确
B.
错误
【简答题】安全气囊的( )是为了保证在汽车碰撞后,汽车电源断路的情况下,安全气囊系统仍能正常工作保护乘员安全。
【单选题】I her half an hour ago, but her mobile phone turned off.
A.
call, is
B.
called, is
C.
am calling, was
D.
called, was
【单选题】Ann___ be in Shanghai because I saw her in the library half an hour ago.
A.
mustn`t
B.
isn`t able to
C.
can`t
D.
may not
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