这是由and构成的一个并列句，第一个分句It was as a physician that he presented himself是强调句式，正常语序是He presented himself as a physician。第二个分句是he was warmly received。

as such是习语，意为“照此, 因此，象这样, 就这一点而论”，用作插入语，常位于句首，有时也位于句中。又如：

As such, evolution did not come out of zero. 照这么说来，进化就不是无中生有。

As such, it changes the nature of some things. 正因为如此，它改变了某些事物的本质。

The government is the main contributor and, as such, controls the project. 政府是主要的出资人，因此，控制着这项计划。

▲此题考查学生是否知道as such的意义和用法，选项B、C、D均为干扰项。