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【单选题】
螺纹的导程等于螺距的的( )倍A.
0.5
B.
1
C.
1.5
D.
2
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反馈参考答案：
举一反三
【简答题】唐诗咏蝉三绝都是什么?
【单选题】Please try ______ English if you want to learn English well. [ ]
A.
practise
B.
to practise
C.
practicing
D.
practices
【单选题】We half an hour on the playground after class. A. spend; to practise running B. take; to practise to run C. spend; practising running D. take; ...
A.
spend; to practise running
B.
take; to practise to run
C.
spend; practising running
D.
take; to practise running
【单选题】We spend two hours _____ _____ English every day. [ ]
A.
practise, saying
B.
to practise, talking
C.
practising, speaking
D.
practising, speak
【单选题】We should keep on _____ English every day. [ ]
A.
to practise to speak
B.
to practise speaking
C.
practising to speak
D.
practising speaking
【简答题】A．perform B．work C．position D．practise
【单选题】He spends as much time as he can ______ English every day. [ ]
A.
to practise speaking
B.
to practise to speak
C.
practise to speak
D.
practising speaking
【单选题】Our sensitivity decreases with age. By age 60, most people have lost 40% of their ability to smell and 50% of their taste buds .
A.
sensible
B.
senseless
C.
sensitive
D.
sensory
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