盲人在何种情况之下有“路权”?()
A.穿着浅色衣服
B.由旁人扶着
C.使用白色拐杖,或牵着引路的狗
D.戴着全黑眼镜
参考答案:C
地方性甲状腺肿最常见的原因是()
A.碘缺乏
B.摄碘过多
C.药物导致甲状腺激素合成受阻
D.酶的缺陷导致甲状腺激素合成障碍
E.甲状腺激素需要量增加
It is the theory ____the earth turns around the sun____ changes the world. [ ]
A. that; what
B. what; that
C. that; which
D. that; that