高等教育 / 新发展英语综合教程（二）
Such electron tubes _ _ _ _ _ _ _ _ in a radio set are also found in a TV set.
A.that we use
B.as we use
C.as we use them
D.that we use them
A.that we use
B.as we use
C.as we use them
D.that we use them
参考答案：
佳题速递：