Question

【题目】_______ the sun works attracts a lot of students who are interested in astronomy.

A. How B. What

C. That D. Why

Answer 1

【答案】A

【解析】考查主语从句。句意：太阳是如何运转的吸引了许多对天文学感兴趣的学生。“_______ the sun works”作主语，是主语从句，从句主谓成分齐全，how“如何”是副词作状语，符合语境。故选A。