JX-300XP系统SCX语言语法注意:逻辑运算和算数运算不能混合运算,不同类型变量不能()
A.加减运算
B.乘除运算
C.混合运算
D.逻辑运算
参考答案:C
—How old is Ms Jessica?
—Don’t ask her how old she is—she’s really ______ about it.
A.particular
B.cautious
C.sensitive
D.anxious
一个空心铜球质量为89g。它能漂浮在水中,且有1/3个球露在水面上,已知铜的密度为8.9×103 kg/m3,则此铜球的体积为________cm3,其空心部分的体积为_______cm3.