An early typewriter produced letters quickly and neatly; the typist, ________ couldn’t see his work on his machine.
A. however   B. therefore    C. yet    D. although

We are interested in the weather because it ________ us so directly—what we wear, what we do, and even how we feel.
A. benefits   B. guides   C. affects    D. effects




答案：A. however
注释：however 然而；

答案：C. affects
注释：affect 影响（作动词）；effect 影响（作名词）；
照；