肌肉中贮存的肌糖原,对血糖的平衡作用是()
A.间接维持血糖的浓度
B.直接维持血糖的浓度
C.与血糖的浓度无关
D.与血糖的浓度无关
E.降低血糖的浓度
参考答案:A
句型转换,每空一词。
1.The man has to see a doctor. (改为否定句)
The man ______ _____ to see a doctor.
2.They are staying there for three weeks.(对划线部分提问)
_____ _____ are they staying there?
3. Tom is 10 years old. Bob is 12 years old. (合并为一句)
Tom is two years _____ _____ Bob.
4. Shanghai is the biggest city in China.(改为同义句)
Shanghai is bigger than _____ _____ _____ in China.
5. Mary needs to take a bus to school.(改为一般疑问句)
_____ Mary_____ to take a bus to school?
已知幂函数f(x)=xa的图象经过点(2,4),则下列判断中不正确的是( )
A.函数图象经过点(-1,1)
B.当x∈[-1,2]时,函数f(x)的值域是[0,4]
C.函数满足f(x)+f(-x)=0
D.函数f(x)的单调减区间为(-∞,0]