He’s through to the men’s tennis( ) for the first time.
A. tournament
B. final
C. prize
D. court
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Some young men started smoking without realizing what the( )were.
A. risky
B. riskness
C. risk
D. risks
A:What's the matter,Miss? B:()
A. Yes,I am.
B. That's OK.
C. I'm looking for my umbrella.
D. I am sorry to hear that.
牛顿和布莱尼茨在（）独立的创立了微积分。
A. 1664年
B. 1667年
C. 1665年
D. 1666年
镜下血尿为红细胞每高倍镜视野大于( )
A. 1个
B. 2个
C. 3个
D. 4个
E. 5个
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