甲状腺功能亢进时，Craefe眼征是
A．眼球下转时上睑不能相应下垂B．瞬目减少C．辐辏运动减弱D．上视时无额纹出现E．双侧眼球突出
参考答案：A
—It’s important ________ us _______ learn English well.
—I agree with you. We should try our best to learn it.
A. to, to B. to, for C. for, to
荷载超过270kg／m2的脚手架或形式特殊的脚手架应进行（）．并经技术负责人批准后方可搭设。
