正常成人骨髓象中,核分裂细胞不应超过()
A.1%
B.2%
C.3%
D.5%
E.7%
参考答案:A
We find _____impossible for us to learn a foreign languagewell in a short time.[ ]
A. that
B. this
C. one
D. it
如果一国出现国际收支逆差,该国外汇供不应求,则该国本币兑换外汇的汇率变动将表现为( )。
A.外汇汇率下跌 B.外汇汇率上涨C.本币汇率上涨 D.本币法定升值