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【判断题】
合金工具钢按其用途又分为刀具钢、模具钢和量具钢三大类。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】It is raining so heavily now. Playing basketball on the playground is _____________
A.
out of question
B.
out of the question
C.
out of breath
D.
out of envy
【单选题】There's a heavy ______. It's ______ now. [ ]
A.
rainy; raining
B.
rain; raining
C.
rain; rains
D.
rainy; rains
【单选题】It is raining now. You have to take______umbrella with you. [ ]
A.
a
B.
an
C.
some
D.
／
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