The president ___by most people in the country.[ ]

A. was highly thought of            

B. thought highly to    

C. was high thought of              

D. was thought highly to

属于偶联G蛋白受体的是（）

A.胰岛素受体

B.生长因子受体

C.N-乙酰胆碱受体

D.甘氨酸受体

E.β-肾上腺素受体