我国食品卫生标准规定肉类中铅的安全限量标准为()。
A.≤0.2mg/kg
B.≤0.5mg/kg
C.≤1.0mg/kg
D.≤1.5mg/kg
E.≤0.1mg/kg
参考答案:B
— Here is some good news for you. You’ve won a holiday to the USA.
—______ That’s great!
A. Have I? B. Pardon? C. Congratulations! D. Good idea!
列出乘法算式.
(1)5个2.34的和是多少?
(2)5.6的7倍是多少?