If Newton lived today, he would be surprised by what __D__ in science and technology. A. had discovered B. had been discovered C. has discovered D. has been discovered 这句算不算宾语从句时态要一致？如果算的话为什么不选B？什么样的宾语从句时态要一致呢？是不是只有I said这样的宾语从句后面才要用过去时态？