4.My doctor _ _ me _a specialist in heart disease.填空,

C和D可以很快排除,关键在于A和B
两词都有“建议”的意思,但advise更强调“劝说”和“给与指导”这样的含义.另外,两个词的接续方法也有所不同.如advise后可接sb.to do,而不能说suggest sb.to do.
advise的基本用法：
1.advise + on.：Will you advise on these points?关于这几点请你提出意见好吗?
2.advise + (doing) + n.：The doctor advised (taking) a week’s rest.医生建议休息一个星期.
3.advise sb.to do sth：I advised him to stop smoking.我劝他戒烟.
4.advise + that：I advised that he (should) stop smoking.我劝他戒烟.
5.advise + sb.+wh-：Please advise me which one to choose.请指点我要选哪一个.
6.advise + sb.+ on：Could you advise me on the problem?对于这个问题你能给我一些忠告吗?
7.advise + sb.+ against：I advised him against driving.我劝他不要开车.
suggest的基本用法：
1.suggest + v-ing :He suggested（us）taking a walk.他建议(我们)去散散步.
2.It is suggested that ...有人提议……：It’s suggested that we (should ) go to bed early and get up early.建议我们早睡早起.
3.suggest + that (从句里陈述语气)暗示；表明：He suggested that John was not honest.他暗示约翰不诚实.
4.suggest + that(从句里虚拟语气)建议：I suggested that they (should) leave early for the airport.我建议他们早点去机场.

C relied on 依赖

B

四个选项分别表示建议，劝告，考虑和坚持，根据题意选B，由于我感觉不太好，我的医生劝告我去海边度假。